When you start your computer, press and hold the F11 key to bring up the Advanced Boot Options menu. This menu should give you options such as System Restore, Startup Repair, Command Prompt, etc.
Try selecting the Startup Repair option. This is a recovery tool that can fix certain system problems that might prevent Windows from starting.
If Startup Repair doesn't work, try using System Restore. This can help by rolling your system back to a point where it was working correctly.
If the above steps don't work, you can try using the Command Prompt option from the Advanced Boot Options to perform further troubleshooting or repair actions.
If none of the above steps work, you may need to consider reinstalling Windows. This will require a bootable USB or DVD with the Windows installation media. Please note that this should be your last resort as it will erase all data on your computer.