Was browsing the internet and suddently my pc freezed and when i restarted pc my graphic card gtx 650 wasnt giving signal to the monitor, after that i decided to check for heat it was cool, pc was running still i tryed to reset the rams,cables,graphic-card and reset bios not giving a result still no signal so suddently i changed the monitor connector the the Intergrated Graphics which motherboard has and it gives the singal to the monitor and pc just works fine.At first i was confused but after getting the signal on the monitor i thought some settings just changed in bios so i went there and tryed to disable the intergrated graphic and change the priority of graphics putting the PCI-e to first still not working.Sometimes i manage to give signal with the gtx 650 it works awile and it freezes again, as for the info i tryed the gtx 650 in another pc with gpu stress software 99% load for about 1 hour it didnt fail im so confused can anyone assist me with this kind of issue. sorry for my bad english its my third language tho