There are several steps you can take to fix the blue screen error in Windows 10:
1. Restart your computer: Sometimes a simple restart can fix the blue screen error. Press the power button on your computer to shut it down, wait for a few seconds, and then turn it back on.
2. Update your drivers: Outdated or corrupted drivers can cause the blue screen error. To update your drivers, go to the Device Manager, right-click on the device with the yellow exclamation mark and select "Update driver."
3. Run a virus scan: Malware and viruses can also cause the blue screen error. Run a full system scan with your antivirus software to check for any infections.
4. Check for hardware issues: Faulty hardware such as a failing hard drive or RAM can cause the blue screen error. Use the Windows Memory Diagnostic tool to check for any issues with your RAM, and run a hard drive diagnostic tool to check for any problems with your hard drive.
5. System restore: If the blue screen error started after installing new software or driver, you can use the System Restore feature to revert your computer to a previous state before the error occurred.
6. Reset or reinstall Windows: If none of the above steps work, you may need to reset or reinstall Windows to fix the blue screen error. Make sure to backup your important files before doing so.