Use the following steps to restore your computer to a time before errors started occurring:
Press and hold the power button on the computer until the computer shuts down (about 5 seconds).
Turn on the computer.
Press the F8 key repeatedly when the first screen displays.
From the Windows Advanced Options Menu, select Safe Mode, and press Enter.
When the Windows desktop displays, Safe Mode is displayed in the four corners of the screen.
, and type system restore
in the Search box. In the search results, click System Restore
If prompted, click OK on the User Account Control message to continue.
System Restore opens.
Select Choose a different restore point, and click Next.
Figure : System Restore: Choose a different restore point
Select a date and time from the list of restore points that matches a date and time before the lock-ups started to occur.
Figure : System Restore: Choosing a restore point
The Confirm your restore point window displays.
Click Finish, and then click Yes.
The computer restarts automatically after the restoration completes.
After completing System Restore, the lock-ups should no longer continue. If lock-ups persist, try a different, earlier restore point. If the lock-ups still persist, continue to the next step and uninstall software associated with lock-ups.
Lock-ups might occur again if the lock-up was caused by an automatic software update, such as software delivered through Windows Update or HP Update. If lock-ups occur again, continue to the next section to remove the most recently downloaded software update. Turn off the automatic software tool (Windows Update, HP Update, or other) and get the latest updates directly from the manufacturer's support Web site.