Computer Repairing: Everything You Need to Know

 

Computer Repairing: Everything You Need to Know

 

Introduction

 

  In the present era of digital advancements, computers have seamlessly integrated into the fabric of our daily existence. Whether it's for work, education, entertainment, or communication, we rely on computers for various tasks. However, like any other electronic device, computers can sometimes encounter issues and require repairs. In this comprehensive blog post, we will delve into the world of computer repairing, exploring common problems, troubleshooting techniques, and expert advice to help you navigate through any computer-related issues effectively.

 

What Is Computer Repairing?

 

  Computer repairing refers to the process of identifying, diagnosing, and resolving hardware and software issues that affect the functionality of a computer system. From minor glitches to major malfunctions, computer repair technicians are trained to troubleshoot and rectify a wide range of problems to ensure that the computer operates smoothly.

 

Common Computer Problems and Solutions

 

Unmasking the Blue Screen of Death (BSOD): Unveiling Causes and Effective Fixes

   The Blue Screen of Death, also known as BSOD, is a notorious issue that occurs when a computer system encounters a critical error. This error is indicated by a blue screen with white text, which forces the computer to shut down or restart. Several factors can lead to a BSOD, including faulty hardware, incompatible drivers, or system errors.

 

To fix the BSOD issue, follow these steps:

 

  Restart your computer and check for any recent software or hardware changes that may have triggered the problem.

  Update your device drivers to ensure compatibility with the operating system.

  Performing a comprehensive system scan is crucial to identify and rectify any corrupted files, ensuring the smooth functioning of your computer.

  If the problem persists, seek professional assistance from a computer repair technician.

 

Slow Performance: Tips to Speed Up Your Computer

 

  Is your computer running slower than usual? A multitude of factors can contribute to sluggish performance, including inadequate memory, an abundance of background processes, or the infiltration of malware. Allow me to share a handful of effective tips to enhance the speed and efficiency of your computer:

 

Upgrade your RAM for better multitasking capabilities.

  Employing a trustworthy antivirus software is imperative to safeguard your system, enabling it to detect and eliminate any malicious malware that may compromise its integrity.

  Disable unnecessary startup programs to reduce the system's load.

  Clean up temporary files and optimize your hard drive for better performance.

  To experience lightning-fast data access and significantly improve your computer's performance, it is worth contemplating an upgrade to a cutting-edge solid-state drive (SSD).

  Virus and Malware Removal: Protecting Your Computer

  Viruses and malware pose a significant threat to computer systems, compromising data security and system stability. To protect your computer from these malicious entities, follow these steps:

 

Install a reputable antivirus software and keep it updated.

 

  Ensuring the security of your computer is of utmost importance, which entails conducting regular scans to detect and eradicate any lurking viruses or malware. Additionally, exercise caution while surfing the internet, refraining from clicking on dubious links or downloading files from unfamiliar sources to mitigate potential risks to your system.

  Keep your operating system and software applications up to date to patch any security vulnerabilities.

 

FAQs

 

Q: What is the typical duration required to successfully repair a computer and restore it to optimal working condition?

A: The time required to repair a computer depends on the nature and severity of the problem. Minor issues can often be resolved within a few hours, while more complex repairs may take a day or two.

 

Q: Can I repair my computer myself?

A: While some computer repairs can be performed by users with technical knowledge, it is recommended to seek professional assistance for complex issues. Attempting repairs without proper expertise may result in further damage to the system.

 

Q: How much does computer repair cost?

A: The cost of computer repair varies depending on the specific problem, the technician's expertise, and your location. Minor repairs can cost as low as $50, while major hardware replacements may exceed a few hundred dollars.

 

Q: When faced with a malfunctioning computer, what factors should be considered to determine whether it is more advantageous to repair the existing device or invest in a replacement?

A: The decision to repair or replace a computer depends on factors such as the age of the system, the extent of the damage, and your budget. If the repairs are expensive and the computer is outdated, it may be more cost-effective to invest in a new device.

 

Q: How can I prevent computer problems?

A: To prevent computer problems, ensure regular maintenance, such as keeping your operating system up to date, running regular virus scans, and performing routine disk cleanup. Additionally, practice safe browsing habits and avoid downloading files from untrusted sources.

 

Q: Where can I find a reliable computer repair service?

A: To find a reliable computer repair service, consider asking for recommendations from friends, family, or colleagues. Online reviews and ratings can also provide valuable insights into the expertise and professionalism of repair technicians in your area.

 

Conclusion

 

  Computer repairing is an essential skill in today's digital world. By familiarizing yourself with common computer problems, troubleshooting techniques, and preventive measures, you can ensure that your computer remains in optimal condition. Remember to seek professional assistance for complex issues and prioritize regular maintenance to prolong the lifespan of your computer system.

Computer Repair Near Me: The Ultimate Guide to Finding Reliable and Efficient Services

Computer Repair Near Me: The Ultimate Guide to Finding Reliable and Efficient Services

Introduction 

  In today's fast-paced digital world, computers have become an indispensable part of our lives. Whether it's for work, entertainment, or communication, we rely heavily on our computers to function smoothly. However, just like any other electronic device, computers are prone to malfunctions and technical issues. When such problems arise, it's crucial to find reliable and efficient computer repair services nearby. In this comprehensive guide, we will explore the various aspects of finding the best computer repair near you.

Understanding the Importance of Professional Computer Repair 

  When faced with a malfunctioning computer, some individuals may be tempted to attempt a DIY repair. However, it's important to recognize the advantages of seeking professional computer repair services. Professionals possess the expertise, experience, and necessary tools to diagnose and fix computer issues accurately. They can efficiently address hardware and software problems while ensuring the safety of your data.

Researching Local Computer Repair Services 

  To find the most suitable computer repair services near you, it's essential to conduct thorough research. Start by seeking recommendations from friends, family, or colleagues who have had positive experiences with local repair technicians. Additionally, explore online platforms such as review websites and social media platforms to gather more information about reputable repair services in your area.

Evaluating the Credentials and Expertise of Repair Technicians 

  Once you have identified a few potential computer repair services, it's important to evaluate the credentials and expertise of the repair technicians. Look for technicians who have relevant certifications, such as CompTIA A+ or Microsoft Certified Professionals, as these indicate a higher level of technical knowledge and skill. Additionally, consider the experience and specialization of the technicians to ensure they can effectively handle your specific computer issues.

Assessing the Range of Services Offered 

  When choosing a computer repair service, it's crucial to assess the range of services they offer. Apart from general repairs, look for additional services like hardware upgrades, data recovery, virus removal, and network troubleshooting. Opting for a service that provides comprehensive solutions can save you time and effort in the long run.

Considering Cost and Turnaround Time 

  Cost and turnaround time are significant factors to consider when selecting a computer repair service. Request quotes from multiple repair technicians and compare their prices. It's important to note that the lowest-priced choice might not necessarily offer the highest quality or most reliable service. Balance cost with the reputation and quality of service provided. Additionally, inquire about the estimated time required to complete the repairs, ensuring it aligns with your schedule and urgency.

Reviews and Testimonials 

  Before making a final decision, read customer reviews and testimonials about the computer repair services you are considering. Online reviews can provide valuable insights into the experiences of past customers, helping you gauge the reliability and quality of the services offered.

Conclusion 

  When it comes to computer repair, finding a reliable and efficient service near you is crucial. By conducting thorough research, evaluating credentials, considering the range of services offered, and weighing cost and turnaround time, you can make an informed decision. Remember, professional computer repair technicians possess the necessary expertise and tools to diagnose and resolve computer issues accurately, ensuring the longevity and optimal performance of your device. With this guide, you are equipped to find the best computer repair services near you and get your computer back up and running smoothly.

Enhance Your Computer Experience with Essential Accessories

 

Enhance Your Computer Experience with Essential Accessories

Introduction

Computers are a vital part of our lives, and there are accessories available that can make them even better. These accessories improve how your computer works and add convenience and style. In this article, we'll look at some must-have accessories that can enhance your productivity, entertainment, and overall satisfaction with your computer.

1. Comfortable Keyboards

Typing on a computer can be more comfortable with an ergonomic keyboard. These keyboards are designed to reduce strain on your wrists and fingers, making typing feel more natural. Look for ones with wrist rests and responsive keys that you can customize to fit your needs.

2. Precise Mice

A good computer mouse is important for accurate control of your cursor. Whether you're browsing the web, editing documents, or playing games, a responsive mouse can make your tasks easier. Consider mice with adjustable settings, programmable buttons, and comfortable designs for long-term use.

3. Immersive Speakers

If you enjoy listening to music or watching movies on your computer, investing in good speakers can greatly enhance your experience. These speakers provide high-quality sound that makes everything more immersive. Look for features like surround sound and Bluetooth connectivity for wireless convenience.

4. Dual Monitors

Boost your productivity by adding a second monitor to your computer setup. With two screens, you can work on multiple projects at once, compare documents side by side, and have a more efficient workflow. Look for monitors with slim bezels and adjustable stands for optimal viewing angles.

5. Reliable External Storage

Running out of storage space is a common problem. To solve it, consider getting an external hard drive or solid-state drive (SSD). These devices allow you to securely store extra files and important documents. Look for ones with large capacity, fast transfer speeds, and strong encryption for added security.

6. Comfortable Desk Chairs

Sitting at your computer for long periods can be uncomfortable. A comfortable desk chair with proper support can make a big difference. Look for chairs with adjustable features like height and armrests to find one that suits your needs and promotes good posture.

7. Cable Management Solutions

Messy cables can make your workspace look cluttered. Invest in cable management solutions to keep your cables organized and tangle-free. This not only improves the appearance of your workspace but also makes it easier to find and access your devices without hassle.

Conclusion

By adding essential accessories to your computer setup, you can improve your comfort, productivity, and overall can enhance your computer experience. Take the time to explore these options and create a well-equipped computer workstation that meets your needs and preferences.

Upgrade your computer experience today by investing in these essential accessories!

Remember to mention the value of each accessory and include a call to action encouraging readers to explore and purchase the accessories that best suit their needs.

Understanding the Basics: Exploring Essential Computer Parts

 

Understanding the Basics: Exploring Essential Computer Parts

Introduction

   Computers have become an integral part of our daily lives, helping us work, play, and connect with others. But have you ever wondered what makes these machines tick? In this blog post, we'll take a closer look at the essential computer parts that come together to create the devices we rely on.

1. Brain Power: Central Processing Unit (CPU)

   The CPU serves as the computer's cognitive powerhouse, resembling the brain in its pivotal role. It handles all the calculations and instructions, making everything run smoothly. When choosing a CPU, think about its speed and the number of cores it has, as these factors determine how fast and efficient your computer will be.

2. Fast Memory: Random Access Memory (RAM)

   RAM is the computer's short-term memory. It helps the CPU quickly access and store data while you're using your computer. With an increased amount of RAM, your computer gains the ability to effortlessly juggle multiple tasks simultaneously, expanding its multitasking prowess. Think of it as a desk where you can keep all your important files and documents within easy reach.

3. Storage Space: Hard Disk Drives (HDDs) and Solid-State Drives (SSDs)

   HDDs and SSDs are where your computer stores all your files, from documents and photos to videos and games. HDDs offer lots of storage space at a lower cost, while SSDs are faster and more reliable. Think of them as the computer's filing cabinets, where you keep everything organized and accessible.

4. Visual Delights: Graphics Processing Unit (GPU)

   The GPU is responsible for making the visuals on your computer screen look great. Whether you're playing games or editing photos, a powerful GPU can make a big difference. It helps create smooth and realistic graphics, adding excitement and immersion to your computing experience.

5. The Main Hub: Motherboard

   The motherboard is like the nervous system of your computer. It connects all the different parts together, allowing them to communicate and work together. Think of it as the main hub where all the wires, cables, and components come together to create a functioning machine.

6. Powering Up: Power Supply Unit (PSU)

   The PSU is what supplies power to all the components in your computer. It converts the electricity from your wall outlet into a form that your computer can use. Think of it as the power source that keeps everything running smoothly and ensures that your computer stays powered up.

7. Keeping Cool: Cooling Systems

   Computers can generate a lot of heat, especially when they're working hard. Cooling systems, like fans and heat sinks, help keep your computer cool and prevent overheating. They work like your computer's personal air conditioning system, ensuring that all the components stay at a safe and optimal temperature.

Conclusion

   Understanding the basic computer parts gives you a better grasp of how these machines function. Each component plays a vital role in creating a seamless computing experience. Whether you're shopping for a new computer or upgrading your existing one, knowing about these parts will help you make informed decisions that suit your needs and budget.

   So, the next time you turn on your computer, take a moment to appreciate the teamwork of these essential components working together to provide you with a powerful and reliable computing experience.

   Remember to explain the purpose of each part in simple terms and highlight how they contribute to the overall functioning of the computer. Encourage readers to gain a basic understanding of computer parts to make informed decisions when purchasing or upgrading their systems.

Computer Maintenance Made Easy: Top Strategies for Hassle-Free Computing

 Computer Maintenance Made Easy: Top Strategies for Hassle-Free Computing

Introduction

   In today's digital age, where our lives are intertwined with technology, computer maintenance plays a crucial role in ensuring smooth and hassle-free computing experiences. By adopting the right strategies, you can not only enhance the longevity of your computer but also enjoy a host of benefits that come with it.

Understanding the Basics of Computer Maintenance

Cleaning and Dusting

Properly maintaining your computer's cleanliness is essential for its optimal performance and longevity.

   Dust, debris, and dirt can accumulate over time, leading to overheating and potential hardware damage.

   To tackle this, follow proper dusting techniques, such as using compressed air to remove dust from your computer's internal components.

   Additionally, don't forget to clean your peripherals, such as your keyboard and mouse, to prevent sticky keys and erratic cursor movements.

Organizing and Managing Files

File organization is a key aspect of computer maintenance that enhances efficiency and productivity.

   By creating effective folder structures, you can easily locate files, reducing search time and frustration.

    Take advantage of file management tools, such as Windows Explorer or macOS Finder, to easily sort,  categorize, and search for files.

Regular Software Updates

Keeping your software up to date is vital for optimal performance and security.

    Software updates often include bug fixes, feature enhancements, and security patches.

   Develop strategies to ensure software updates are regularly and promptly installed, either manually or  by leveraging automatic update settings.

   Prioritize critical updates to avoid potential vulnerabilities that may be exploited by cybercriminals.

Protecting Your Computer from Security Threats

Understanding Malware and Viruses

Malware and viruses pose significant threats to your computer's security and your personal data.

   Familiarize yourself with different types of malware, such as viruses, worms, and ransomware, to understand the risks they present.

   Utilize reputable antivirus software to protect your computer from these malicious programs.

   Best practices for avoiding malware include exercising caution when downloading files, clicking on suspicious links, or opening email attachments from unknown sources.

Securing Your Internet Connection

A secure internet connection is crucial to safeguard your computer from potential attacks or unauthorized access.

   Ensure your Wi-Fi network is protected with a strong, unique password and encryption.

  Consider using a reliable Virtual Private Network (VPN) for an added layer of security, especially when accessing public Wi-Fi networks or sensitive information.

Creating Strong Passwords

Strong passwords play a vital role in keeping your accounts and sensitive information secure.

    Emphasize the importance of creating unique passwords that combine a variety of characters, including uppercase and lowercase letters, numbers, and symbols.

    Tips for creating and managing passwords include avoiding common words or personal information and changing passwords regularly.

    Password management tools can assist in securely storing and generating complex passwords, reducing the risk of forgetting or reusing them.

Optimizing Performance and Speed

Removing Unnecessary Programs

Unnecessary software can consume valuable system resources and slow down your computer's performance.

   Identify and uninstall unwanted programs that you no longer use or need.

   Efficiently manage startup programs to prevent excessive resource consumption during system boot-up.

Cleaning Temporary Files

Temporary files can accumulate on your computer and take up valuable disk space, potentially impacting performance.

   Regularly clean temporary files using built-in disk cleanup tools available in operating systems like Windows or third-party software.

   Additionally, clearing browser cache can improve browsing speed and efficiency.

Managing System Resources

Efficiently managing system resources ensures optimal performance and power usage.

    Monitor CPU, RAM, and disk usage to identify potential bottlenecks or resource-intensive processes.

    Close unnecessary background processes that may be consuming system resources.

   Optimize power and energy settings to strike a balance between performance and energy conservation.

Backing Up and Restoring Data

Importance of Regular Backups

Data loss can occur due to various factors, such as hardware failure, accidental deletions, or malware attacks.

   Understand the risks associated with data loss and the critical importance of regular backups.

    Establish a backup schedule to periodically duplicate and store your important files, ensuring they are recoverable in case of emergencies.

    Select appropriate backup methods, such as external hard drives, network-attached storage (NAS), or cloud storage.

Cloud Storage and Syncing

Utilizing cloud storage services offers convenience, accessibility, and redundancy for your data.

   Take advantage of reputable cloud storage providers to store and sync your files across multiple devices.

   Ensure data security by using encryption and two-factor authentication methods provided by these services.

Restoring Data from Backups

In the event of data loss, knowing how to restore your files from backups is essential.

   Follow step-by-step instructions provided by your backup solution to restore data seamlessly.

   Learn how to recover data from specific applications, such as email clients or productivity suites.

   Troubleshoot common restoration issues, such as file conflicts or compatibility problems, to ensure successful data recovery.

Troubleshooting Common Computer Issues

Slow Performance

Slow performance can be frustrating, but understanding the potential causes can help you address the issue.

   Identify potential causes, such as insufficient memory, fragmented disk drives, or resource-intensive applications.

   Implement strategies to improve speed, such as adding more RAM, optimizing hard disk drives, or closing unnecessary applications.

   If troubleshooting on your own proves challenging, consider seeking professional help for expert advice and assistance.

Software Crashes and Freezes

Software crashes and freezes can disrupt your workflow and lead to frustration.

    Understand common software issues like software conflicts, outdated drivers, or faulty installations.

    Troubleshoot crashes and freezes by updating software, reinstalling problematic applications, or using diagnostic tools.

   Prevent future software issues by regularly updating and maintaining the software installed on your computer.

Hardware Problems

Hardware issues can affect your computer's performance and functionality.

   Familiarize yourself with signs of hardware issues, such as strange noises, overheating, or unrecognized peripherals.

   Perform basic DIY troubleshooting steps, including checking cable connections, running hardware diagnostics, or updating drivers.

    If problems persist, consult with hardware technicians who can provide expert guidance and perform necessary repairs.

Summary

   In conclusion, computer maintenance is essential to ensure a hassle-free computing experience. By following the strategies outlined above, you can keep your computer clean, organized, secure, optimized, and ready to tackle any challenges that come your way. Regular backups, troubleshooting skills, and an understanding of basic maintenance practices will help you make the most of your digital journey.

FAQs

How often should I clean my computer?

In order to maintain optimal performance, it is advisable to undertake regular computer cleaning, ideally every three months, or more frequently should you observe a significant accumulation of dust.

Are automatic software updates reliable?

Automatic updates are generally reliable, but it is important to stay vigilant and ensure that updates are being installed correctly, as occasional errors may occur.

Are cloud storage services safe for sensitive data?

Reputable cloud storage services implement advanced security measures, including encryption and multi-factor authentication, to protect your data. However, always exercise caution and assess the privacy policies of the service before storing sensitive information.

Should I attempt hardware troubleshooting on my own?

Basic hardware troubleshooting, such as checking connections or updating drivers, can be done by individuals with technical knowledge. However, for complex hardware issues, it is advisable to consult with professional hardware technicians for expert assistance.

COMPUTER AND ELECTRICAL CONNECTIONS....

     

     Have you ever experience electrical shocks when you touch your computer , refrigerator, washing machine when they are in use ? Or Have you ever experience power cut while its not from the supply company (i.e. there is electricity in your surrounding exept your house or room ? Let us now discuss over these facts along with some information on electrical connections in our houses.

     The electric supply companies delivers AC (220 Volt, 50 Hz) through supply lines (wires mainly of Aluminium). These lines are called Phase or Live wires. there is also a neutral wire which completes every household circuit.

MAIN SWITCH or FUSE

   

     The LIVE and NEUTRAL wires are first connected to the Main Switch. Then the Live wire is fed to a Meter which measures electrical energy consumption. Fuse are connected for security. A Fuse wire is an Alloy of Tin and Lead (75% Sn + 25% Pb). It has Higher resistivity but lower melting point. Thus if for any reason current of the supply line increases, it melts and disconnect the household circuit from the main line.

 DISTRIBUTION BOARD

        Live wire from the main switch is connected to the distribution board through another fuse. From fuse the wire is fed to different switches for different appliances. There are switches, three pin plugs, indicators in a board. The live wire is first connected to the switch for the three pin plug , then from switch the wire is connected to the thee pin plug's one side ;from there to all other switches. The neutral wire starts from the appliances and ends at the three pin plug's second side and from there the wire goes to the neutral wire of the distribution line.

SWITCH

       A switch is a circuit component that can make a circuit open or close with a stroke. It is such configured, that by the help of a spring and a lever it can connect or disconnect two points. One of those point is connected to the Live wire and the other is connected to the appliance. If by stroke we make the Switch 'on' then current flows up to the appliance. The second end of the appliance is connected to the Neutral wire of the supply line.

 THREE PIN PLUG

       There are some electrical appliances such as Computers, Refrigerators, Washing machines, are used temporarily.These are connected to the supply line through Three Pin Plug. There are three wires in a three pin plug. One is Live , the second is neutral and the third is Earth .These wires are of different colours The Live wire is Red or Brown. The Neutral wire is Blue or Black. The Earth wire is Green. The color code is maintained during wiring so that any one can recognize the wires later.

EARTHING
       The Earthing is done by metallic rod and broad gauge wire . At first we dig a little. the wire is connected to the rod and the rod is buried in the pit.then  we pour plenty of salt and charcoal there. This wire is connected to the electrical switch board . the earth wire of three pin plug is connected to this wire.

        During use electrons gather on the  outer metallic surface of some household appliance. Heavy gathering may damage the appliance. These electrons are carried to earth by this Earth wire. If Earthing is not good enough then you may experience a shock when you touch the electrical appliance.

CONNECTION OF A PC
         
          If you want to use a PC at your home then at first make a good electrical wiring with very good earthing. If you are using UPS( un-interepted power supply- i.e. if there is a load shedding it can feed back power for almost 30 to 40 minutes) then connect its three pin plug to the three pin socket of the switch board.There are three Three Pin Sockets at the back of the UPS. Here we connect monitor, cpu and music system power chords. 

SWITCHING ON A PC

Firstly switch on the switches on the switch board. 
For UPS to use, turn on its switch on its front side ( some times on the backside)    
Turn on the power button on the CPU  
Wait a while ..... It will run automatically


  

DEVELOPMENT OF ELECTRICITY......

DEVELOPMENT OF ELECTRICITY......

   Who had discovered first electric cell ? or, who made today's method of power generation easier? Let us have a quick view through the history of power generation.

   The first man to make a cell was Alessandro Volta in the year 1800 AD . He made a pile of  Zinc and Copper plates one after another and separating them with wet cloths dipped in Sulfuric acid. Later years electric cell was formed using the Volta's idea.

SIMPLE VOLTAIC CELL

      STRUCTURE

           Two plates one of Zinc And the other Copper is partly immersed in dilute Sulfuric Acid taken in a pot. This makes a Simple Voltaic Cell. The Copper plate becomes positive and the Zinc plate becomes negative. If we connect them with a conducting wire then electric current flows.

      WORKING

                In simple Voltaic cell Chemical energy is transformed into electrical energy. This incident was discovered by famous scientist Galvani of Italy.

   

         Change in the Solution

           Molecules of the dilute Sulfuric Acid dissociates into Hydrogen and Sulfate ions

  

                H₂SO₄↔ 2H⁺+SO₄^-2

        

Reaction at zinc Plate

              In this plate Zn atoms free two of its atomic electron and transforms into Zn ions. These electrons stay on the  Zn plate and make it negative. The Zn ions come into the solution.There it combines with Sulfate ions to form Zinc-Sulfate.

                    

                        Zn-2e↔Zn⁺² 

                               Zn⁺² + SO₄^-2  = ZnSO₄ 

       

         Reaction at Copper Plate

              The Hydrogen ions come to copper plate and take electrons from there. Hydrogen ion first turns into atom .Thus Copper plate becomes positive and Hydrogen gas is generated.

 

                        H⁺ +e=H

After this various electric cell was made. Of them Lech lance cell Lead acid cells are popular.But interesting one was the dry cells.

  DRY CELL

     To make a dry cell we need a cylinder of Zinc.Here we take Ammonium Chloride as electrolytic medium. A carbon (graphite) rod is used as the second electrode while the Zn cylinder is the first one. The electrolyte at first dissociates in to ions. Zn plays same role as in case of Simple Voltaic Cell; but this time it produces Zinc Chloride. The Carbon rod acts as copper plate in Simple Voltaic Cell. But here along with Hydrogen Ammonia is generated.

The reactions occur in the dry cell is as follows: 

NH₄Cl↔NH₄⁺+Cl^-

Zn-2e↔Zn⁺² 

Zn⁺²  + 2Cl^- =ZnCl₂ 

2NH₄⁺+2e=NH₃+H₂