First, if you're actually running a secondary monitor, unplug it an only use the main screen.

How To Start In 'Safe Mode'

If you can start into Safe Mode, try cleaning out the Temporary folders on the computer, (Temp, Temporary Internet Files, etc.), then uninstall any recently added programs or P2P programs, then attempt to run Error Checking/Chkdsk per the instructions below:.

Next, If you can start in Safe Mode, make sure to scan the computer with ALL of your various antispyware tools. You DO have a variety of antispyware and antivirus scanners installed and up to date? If not, please do so.

And if you're still having problems and they can't be corrected, you may want to consider returning it for another.

Hope this helps.