I suggest you save your data and reinstall from the recovery partition. From what you describe, I doubt you will be able to repair it. Here is the procedure:
· Save all your important files.
· Unplug all the devicesand drivers from your
CPU (except the keyboard and the mouse), including your printer,camera and memory stick.
· Shut off the computerand then turn it on, or simply restart it.
· As soon as you see theDell logo at the start keep on hitting the F8 key repeatedly. Do not stop untilyou see the screen that says "Repair your computer." There will beother options too but chose this option and hit Enter.
· Next you will see aprompt window giving you options to select the keyboard layout select from thedrop-down menu "US" and click "OK."
· On the next screen youwill be asked to select the user ID and the password of your
Windows account. Select your user account, but makesure your user account has administrative functions. Type in your password. Ifyou don't have a password, leave it blank and click "OK."
· Now you will come to awindow with multiple options. Choose the one at the bottom that reads,"Dell Factory Image Restore." By clicking "Dell Factory ImageRestore" , it will generate an operation that will take about 45 minutesto complete.