Display problem

I have a Toshiba Satellite model M35X-S114 which runes on Windows XP home

edition sp2.

All of a sudden today the display has a 2 inch transparent bar from top to

bottom approximatly 2 inches from the left side of the display.

I have tried to troubleshoot but to no avail.

I would appreciate anyones help with this problem.

I phoned Toshiba and they suggested it my be a hardware problem because I

play games on the Internet that use heavy graphics.

Thanks in advance for any comments