You may follow the steps mentioned below to restore the Dell XPS M1330 to its factory default:
1 Turn on the computer.
During the boot process, a blue bar with www.dell.com
appears at the top of the screen.
2 Immediately upon seeing the blue bar, press <Ctrl><F11>.
If you do not press <Ctrl><F11> in time, let the computer finish starting, and then restart the
NOTICE: If you do not want to proceed with PC Restore, click Reboot in the following step.
3 On the next screen that appears, click Restore.
4 On the next screen, click Confirm.
The restore process takes approximately 6-10 minutes to complete.
5 When prompted, click Finish to reboot the computer.
NOTE: Do not manually shut down the computer. Click Finish and let the computer completely reboot.
6 When prompted, click Yes.
The computer restarts. Because the computer is restored to its original operating state, the screens that
appear, such as the End User License Agreement, are the same ones that appeared the first time the
computer was turned on.
7 Click Next.
The System Restore screen appears and the computer restarts.
8 After the computer restarts, click OK.
9 You will need to run Windows Update as well as Live Update for your virus protection as these will be seriously out of date.
Hope this helps..