New system worked fine for 30 days then no post

secondsystem

Distinguished
Apr 25, 2007
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My computer is not sending a signal to my monitor when I turn it on. The monitor is fine. The computer worked for 30 days (convenient for newegg) then began to spiral downward. I will explan more below. Just to help here is my system

Mobo: gigabyte P965 DS3 (rev 1.3)
Processor: Core 2 duo E6600
Ram: Corsair XMS2 2x1GB DDR21066
Video Card: 320MB EVGA 8800GTS Overclocked (550Mhz)
Heatsink: Thermalright Ultra 120 Extreme
Case: Antec P180B
OS: WinXP x64 <-- Because It was free
Monitor: 22" G-skill 1080P

I had my computer standing upright and it suddenly froze, no mouse movement or anything. I turned it off and it would not come back on. I took off the heatsink and processor after many attempts at restarting it. I put the processor ack in and screwed in the heatsink again and it worked after a few tries.

20 minutes later It froze again. So I turned it off and no boot or post again just a black screen. I jiggled the heatsink a little and it booted again. This whole process has been happening on and off for the last couple days. I have checked to see that the power supply is on the correct voltage settings and I have checked running CPU and system heat it's around 40 degrees C or lower. It's a little warm but nothing that would cause damage to my system.

I wanted to get an expert opinion before I bought a new heatsink or processor. Do I just need some rubbing alcohol to clean processor and heatsink and some arctic silver to replace old paste?

I do not know anything that would make this happen except God's wrath for browsing porn at dual core speeds. plz help!

Thanks
 

Cybercraig

Distinguished
Dec 31, 2007
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19,780
Remount the heatsink and CPU. You can clean the heatsink off with rubbing alcohol. Use Arctic Silver 5 or any other thermal paste. If the heatsink cannot be mounted tight to the CPU then get rid of it. You cannot have the heatsink moving around or not applying adequate pressure to the CPU. Also check you fan connections, but jiggling the heatsink to start it is spooky!