How to Fix Common Windows Errors
Windows is a great operating system that runs on most computers in the United States and Canada. But sometimes it shows error messages that can be confusing and annoying. This guide will show you how to fix the most common Windows errors in a way that even a 12‑year‑old can understand. All the steps are simple, safe, and quick.
Why Windows Shows Errors
Windows sometimes shows errors because:
- The computer is missing a file or a driver.
- A program is not working the way it should.
- Windows needs to update its software.
- There is a problem with the internet or a network.
- The computer is running out of memory or disk space.
Knowing why the error happens helps you solve it faster. Below are the most common Windows errors and how to fix them.
Common Windows Errors and How to Fix Them
1. “Windows Update Failed”
When Windows can’t finish installing updates, you’ll see a message that says “Windows update failed.” It can stop your computer from working properly.
- Open Settings: Click the Start button, then click the gear icon (Settings).
- Go to Update & Security: Click “Windows Update” on the left side.
- Run the Troubleshooter: Click “Troubleshoot” then “Additional troubleshooters.” Find “Windows Update” and click “Run.” Follow the on‑screen instructions.
- Restart Your Computer: After the troubleshooter finishes, click “Restart now.” Windows will try the update again.
- Check for Updates Manually: Go back to “Windows Update” and click “Check for updates.” If it still fails, you can download the Windows Update Troubleshooter tool from Microsoft and run it.
2. “Blue Screen of Death (BSOD)”
A blue screen means Windows found a serious problem and stopped. It can show a code like “IRQL_NOT_LESS_OR_EQUAL” or “PAGE_FAULT_IN_NONPAGED_AREA.”
- Restart in Safe Mode: Turn your computer off, then on. Press the F8 key (or Shift + F8) before Windows starts. Choose “Safe Mode.”
- Check for New Drivers: In Safe Mode, open Device Manager (search for it in the Start menu). Look for any devices with a yellow exclamation mark. Right‑click and choose “Update driver.”
- Run a Virus Scan: Use Windows Defender or another trusted antivirus program to scan for malware.
- Check Disk for Errors: Open Command Prompt as an administrator (search for “cmd”, right‑click, and choose “Run as administrator”). Type:
chkdsk /f /rand press Enter. Reboot when prompted. - Check Memory: Use the Windows Memory Diagnostic tool. Search for “Windows Memory Diagnostic” and click “Restart now.” The computer will check for memory problems.
- Restore to a Previous Point: If the BSOD started after installing a program, use System Restore. Search for “Create a restore point” and follow the wizard.
3. “Windows Cannot Find the Device”
When you plug in a USB drive, printer, or external hard drive, Windows may say it can’t find the device.
- Try a Different USB Port: Plug the device into another port on your computer.
- Check the Cable: Make sure the cable is not broken. Try a different cable if you have one.
- Update the Driver: Open Device Manager, find the device, right‑click, and choose “Update driver.” Let Windows search automatically.
- Restart the Computer: Sometimes a simple reboot fixes the issue.
- Use Disk Management: Search for “Create and format hard disk partitions.” If the drive shows up but has no letter, right‑click and choose “Change drive letter and paths.” Add a letter.
4. “Internet Connection Problems”
Windows might say “No internet access” or “DNS server not responding.”
- Check Physical Connections: Make sure your Ethernet cable is plugged in or your Wi‑Fi is turned on.
- Run the Network Troubleshooter: Go to Settings → Network & Internet → Status → Network troubleshooter. Follow the steps.
- Reset TCP/IP Stack: Open Command Prompt as an administrator. Type:
netsh int ip reset netsh winsock reset ipconfig /flushdns
Then restart your computer. - Check Router Settings: Log into your router (usually at
192.168.1.1or192.168.0.1) and make sure it’s working. Restart the router if needed. - Disable VPN or Proxy: If you use a VPN or proxy, turn it off to see if the connection improves.
5. “Windows Not Responding” or “Application Not Responding”
Sometimes a program freezes and shows “Not Responding.”
- Wait a Few Minutes: Some programs need time to finish a task.
- Force Quit: Press Ctrl + Alt + Del and choose “Task Manager.” Find the program, click it, and press “End Task.”
- Restart the Program: Open it again and see if it works.
- Update or Reinstall the Program: Go to the program’s website or use the Microsoft Store to get the latest version.
- Check for Windows Updates: Sometimes updates fix compatibility problems.
6. “Windows Activation Failed”
Windows may say your copy is not activated.
- Check the Product Key: Make sure you typed it correctly. The key has 25 characters in groups of 5 (e.g.,
XXXXX-XXXXX-XXXXX-XXXXX-XXXXX). - Run the Activation Troubleshooter: Settings → Update & Security → Activation → Troubleshoot. Follow the


