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5 minutes after I turn on my PC the onboard graphics card is usually over 80° celsius and then crashes (random colors on screen, only way to get out is to just plug out the pc).

  • I haven't installed any new drivers or added/changed hardware recently
  • Everything went fine until yesterday

What should I do next? Do I have to buy a new mainboard right now?

There is no fan on the onboard graphics card, only a heatsink.

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closed as too localized by Sathya May 3 '11 at 4:57

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

The first thing I would try is to add a fan, bigger heat sink, and make sure your case is ventilated well. Check for dust and lint build up. The next would be to add a heatsink with a fan. Those are the cheapest option. If you have a free graphics slot on your motherboard, you could disable the onboard graphics card and use a new on installed in your free slot. Your mainboard is probably fine, and if you have been otherwise happy with it, I would keep it and just install a new graphics card.

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I have a similar issue but I have both a graphics card and onboard graphics in hybrid SLI. Graphics card runs at normal temps but onboard graphics keeps getting hotter going past ~100 C. Nothing seems to fix it. – Wesley Feb 27 '10 at 22:10

If this start of happening all of a sudden, you may want to reapply some thermal paste like ArcticSilver

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AND you can get a new heatsink, a premium one like Zalman. – Shiki Jun 4 '10 at 17:19

If your graphics cards are over 2 years old, go into your case and give everything with fins or a fan a thorough blast of compressed air. Those dust bunnies are to components, what parkas are for arctic explorers. Dust bunnies = heat.

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