hi guys got a mates comp here , for last few months it been randomly swiching off , but power button light is still showing , now when boot up , the cd drives access as they should , the hdd whirs couple times then stops , nothing comes up on screen , no post beep just sits there with fan on cpu cooler running , its got new ram , and also a new psu , he did mention he somehow loosened the locking screws on the heatsink and then screwed back down , would that affect the thermal paste , thanks in advance
