90 degrees Celsius on my idle GPU

[Lmaoguy]

Okay so up until today I have been playing many games perfectly, but today I tried playing a game with my friend and my PC didnt end up displaying anything after the first couple minutes, As soon as it didnt display the fans also went to Max. When I managed to get back on my computer I checked the temperature and it said it is at 90 degrees Celsius. Is there any way to cool it so I can happily play some <removed by mod> games again? My PC specs are:
Processor Intel(R) Core(TM) i7 CPU 970 @ 3.20GHz
Video Card NVIDIA GeForce GTX 580
Memory 12 GB
Operating System Microsoft Windows 10 (build 10240), 64-bit

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[Deleted member 362816]

I would advise to remove the card and make sure it is not full of dust. If you have already done that I would recommend to remove and change the thermal paste. If that doesn't work card might be dying.