Question Gtx 660 performance edition smells lile its burning

[Zashery]

So last night i was playing some games like league of legends and garys mod and i went to sleep i work up this morning and woke up my computer. After a few minutes i noticed a burning smell coming from the computer and i opened it up and looked for any problems the sm was coming from the gpu. The fan was still working but i could tell that it was the gpu. Any idea of what the problem could be? Please help oh and just last night i was having problems with my drivers so i completely reinstalled all my geforce drivers.

 

[RememberThe5th]

Firstly what are the rest of pc specs?
CPU-
Motherboard-
RAM-
PSU-

Have you dusted the PC recently within the few months?
How old is it?
Have you checked the temperatures of GPU? (You can check them via GPUZ on sensor tab, Hwinfo,msi afterburner)