Computer 9

• Computers allow storage and processing of huge amounts of data.
• Verify Backup Integrity: Periodically verify that your backups are complete and accessible.
• Computers speed up daily work, carry out critical transactions, and achieve accuracy and precision in work.
• Analog computers, the first versions of computer, are almost extinct today but can perform several mathematical operations simultaneously and use continuous mathematical operations.
• Digital computers use digital circuits and operate on two states: 0 and 1 or off and on, representing data as series of 0s and 1s, and are suited for complex computation and have higher processing power and speed.
• Hybrid computers combine the strengths of both analog and digital, are fast for real-time applications, and efficient for solving specific problems.
• Mainframe computers are used for highly critical applications like bulk data processing or ERP (Enterprise Resource Planning) and can host multiple OS and operate as a number of virtual machines and substitute for several small servers.
• Minicomputers, also known as midrange systems or workstations, are popular for their quality of multiprocessing and can use multiple processors connected to a common memory and the same peripheral devices to perform different tasks simultaneously.
• Servers are designed to provide services to client machines in a network, have greater complexity than microcomputers, and are generally used for applications like engineering computations, data handling, etc.
• Computer Won't Turn On: Check power source and ensure that the power outlet is functioning, and the power cable is properly connected.
• Driver Problems: Update drivers, rollback drivers, and reinstall drivers.
• Software issues: Update the application, check for system requirements, reinstall the application, and ensure that all device drivers, especially graphics and chipset drivers, are up-to-date.
• Software Compatibility Issues: Check system requirements, run in compatibility mode, and ensure that the software is compatible with your operating system and hardware.
• Slow Performance: Check for malware, free up disk space, upgrade hardware, and ensure all device drivers, especially graphics and chipset drivers, are up-to-date.
• Hardware Not Recognized: Check connections, update drivers, and check device manager.
• Noisy or Malfunctioning Fans: Clean the fans, replace faulty fans, and ensure that all cables are securely connected, especially for external devices.
• Blue Screen of Death (BSOD) or System Crashes: Check for overheating, clean out dust from fans and heatsinks, update drivers, run a memory diagnostic tool, and ensure all device drivers, especially graphics and chipset drivers, are up-to-date.
• Unresponsive or Frozen System: Force restart, check for overheating, identify problematic applications, and ensure that all cables are securely connected, especially for external devices.
• Data Loss or Corruption: Create regular backups of important data to prevent loss in case of software or hardware failures.
• Peripheral Connectivity Issues: Check cables and ports, update drivers, test on another system, and ensure that all cables are securely connected, especially for external devices.
• Hard Drive Issues: Run disk check, back up data, and consider replacing the drive.
• Operating System Errors: Check for updates, run system file checker (SFC), and check for malware.
• Power supply test: Test the power supply unit (PSU) with a power supply tester or replace it with a known working one.
• Computer Freezes or Hangs: Check for software conflicts, overheating, and ensure that all cables are securely connected, especially for external devices.
• Internet Connectivity Issues: Restart your router and modem, check network cables, update network drivers, and ensure that all cables are securely connected, especially for external devices.
• Check Device Connection: Verify that the device is connected to the network (Wi-Fi or Ethernet).
• Data Backup Issues: Establish a regular backup schedule.
• Accidental Deletion of Files: Check Recycle Bin/Trash for recently deleted files and restore them.
• File Permissions Issues: Check file permissions, adjust security settings, and review file associations.
• Flush DNS Cache: Use the command prompt or terminal to flush your DNS cache (ipconfig /flushdns for Windows, sudo service nscd restart for Linux).
• Restart VPN Service: Restart the VPN service or application you are using.
• Unintentional File Overwrites: Use version control, make regular manual backups, and adjust security settings.
• Use Google DNS: Change your DNS settings to use Google's public DNS servers (8.8.8.8 and 8.8.4.4) or other reliable DNS servers.
• Update Software: Ensure that your software applications are updated to support the latest file formats.
• Check Network Adapter Settings: Make sure your network adapter settings are configured correctly, including IP settings and DNS.
• Monitor and control physical access points to prevent unauthorized entry.
• Update VPN Software: Ensure that your VPN software is up-to-date.
• Use data recovery tools to retrieve lost files in case of accidental deletion.
• Check MAC Address Filtering: Ensure that MAC address filtering on the router is not preventing the device from connecting.
• Try Another Port: If using a switch or router, try connecting to a different Ethernet port.