Are common if the machine overheats.
How long has it been since your last yearly cleaning? Cnet shows how at http://reviews.cnet.com/4520-11319_7-6240575-1.html
Bob
Please help, few weeks ago my 17 in HD 1080p 1920X1200 monitor went black then a message came up a box said no signal RPG and 3 color boxes, upon checking different online places can be either my monitor or video card... just need help from a professional it is only 2 yr old. I have model number gateway fx7026 64bit home premium with sp1 4GB DDR2 Duel Channel.. I see that it has 2 plug in for the monitor on tower so plugged into a different & seemed ok but within 6 hrs did it again shuts down even while in use - I hear very light beeps from computer & screen goes black shows the message then moniter shuts down computer still running please anyhelp you can give would be great..I have nothing else I can plug into the computer or now other moniter I can plug into computer-

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