sreenresolution problem

  deepus 04:18 03 Feb 2007

I changed my screen resolution form 640*480 to
728*1220.OS=WindowsXP.But after tat when on booting I can see only black sreen .In center of tat one Violet-Blue-White sreen showing Horizontal Vertical Frequency.I cant even see the OS UserInterface and none of the keys r working.plz help.Any thing I have to do in Monitor??? or in Hardware ??

  ICF 07:33 03 Feb 2007

Boot into safe mode and change it back to 640*480.

Booting into safe mode click here

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