PEE try restore in SAFE MODE it may just work for you .....reboot p-c when it starts to load keep pressing F8 up and down until it shows in SAFE MODE.......then try this ...
To run System Restore in safe mode
1.
Access System Restore through Help and Support.
2.
Follow the instructions on your screen.
To access the System Restore Wizard, click Start, and then click Help and Support. Click Performance and Maintenance, click Using System Restore to undo changes, and then click Run the System Restore Wizard........
While the computer is in safe mode, System Restore does not create any restore points. Therefore, you cannot undo a restoration that you performed when the computer was in safe mode......
You can use System Restore to restore your computer to any restore point while in safe mode. If you cannot start the computer in standard mode, you can use System Restore to restore to a time when you could start the computer without errors......
To restore to a time when your computer started without errors, select a restore point as close to the time you remember it last started without errors......