So...my daughter was using my old Nvidia 9800gtx+ till recently. The card failed and the pc would not even post. A quick check of the card on another sys confirmed it as bad. Daughters PC gets a new 460gtx and I was about to throw the 9800gtx+ out.
Then I remembered something about baking your bad video card to try and fix them.
I proceeded to strip the card of it heat sync ( reference one ), cleaned the thermal paste of the gpu and others...placed the card on an aluminum covered tray... wrapped the card in foil as well making sure the end caps were off the tray surface with a "ball" of foil. Components facing down.
Preheated the oven to 385 deg F. Placed the card in for 10 minutes. After which I let the card air cool still covered in foil.
A new dab of thermal compound on the GPU..reattached the heat sync...plugged it into my extra pc that still runs WinXP Pro and the thing went thru post. Got to the desktop nary an error or artifact to be seen.
It still works three days later and I've been playing old games on it....FarCry1..STALKER1 and some older titles that will not run all that well in my Win7 rig.
Don't know how long it will last but for now I resuscitated a card that I was ready to throw out....