Hi Dorothy,My name isXXXXX will assist you with your computer issue.I am sorry to hear this happened.Please try these steps and let me know if it helps>
try running System Restore in Safe Mode: Power off the computer and then Boot your PC and press F8 while it is turning on.
Use the keyboard arrow keys to select Safe Mode. Then launch System Restore.
To launch System Restore in Windows 7 click Start, type system restore, and press ENTER
If that doesn't work, Windows 7 users have another option: the Windows 7 System Repair Disc.
To create it, in Windows 7, select Start, type system repair disc, press ENTER and follow the prompts. You'll need a blank CD-R and an optical drive that can burn one.
Once the disc is burned, leave it in the drive and reboot your PC. Keep an eye on the screen. When you're prompted to "Press any key;" do so.
Follow the prompts until you get to the "Choose a recovery tool" page. Then select System Restore.