Hello and welcome to justanswer, My name is ***** ***** i will be assisting you today,
I'm sorry about the issue, what is the version of your windows please?
Please restart your computer and tap the F8 key repeatedly, select safe mode option then follow these steps :
click Start > All Programs > Accessories > System Tools program group. Click on the System Restore program icon. Click Next > on the Restore system files and settings window. Choose the restore point that you want to use. You should use the restore point with a date when you still don't have the problem you are facing now.
let me know the results please
so has everything worked out ?
do you have windows 7 disc?
are you able to access to the safe mode, did you tried my previous suggestion please?
please try my previous solution and let me know the results
Put the windows 7 disc in your optical drive and restart to boot from the DVD. On the "Install Windows" screen, make the appropriate selections for language, time, and keyboard, and then click “Next”.
In the next screen, click “Repair Your Computer”. Do not click "Install now"
Select “Startup Repair” once the process finishs, restart your computer and check
let me know the results
Please choose the oldest date, you can also try this :
hope it work