I was asked to look at a GT 5028. At first look I determined the on board video went out and installed a new nvida card 7600. It was noted that these machines can not handle the heat of cards in the 8800 range. I returned the machine in working condition. It was brought back to me after a few weeks, with the same problem with the new card. I left the box open over the weekend and upon returning Monday morning, on board video came up fine. With it now running with the case open, I noticed one of the heat sync was not only loose but extremly hot. Decided to run speedfan test. Nothing out of the ordinary. Slightly hot. Over 50 C. Some machines can take 60. Decided to run Prime95 stress test. Machine blew up. Blue screen. Local sensor way too hot. After further review this chip was the on board video! How about that. Re glued the heat sync and rigged a $3 dollar fan on top. Not the best solution but for our needs, perfect. Let it sit over night. Next day, boot up fine, re ran stress test and fanspeed test. Ran slightly hot but the Prim95 stress test really should "stress it out". That is our solution. Bad board, bad design. Optimal would be board replacement. Cheap solution, rigged fan on video chip under loose heat sync.
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