Do not Reinstall windows, just do this!
system restore is a windows operating system feature that allows us to revert our computer’s state to that of a previous point in time, which can be used to recover from system malfunctions or other system failures. It is designed to protect and repair the computer software.so in this video I will show your first how to create a restore point and then how to restore our computer using this restore point.
how to repair windows 7