Before this my pc was working fine. So i wanted to clean it and i did but after i plugged every cable in i notice that there was some kinda issue my pc was turning on and then off i run pc with on ram but then i went to BIOS i saw my cpu temp was really high about 67 c i turned quickly off then waited removed the Cooler then i put a new thermal paste i did but i wanted to get my second ram stick into pc and still had the same issue i thought i put too much thermal paste on cpu i cleaned the cpu puted it back then i saw no display on monitor no leds on keybaord i thought maybe cpu was the problem so i tried to run pc without the cooler on cpu and i touched it but it wasn't even warm it was cold? So csn somebody help? Sorry for my bad English.