Did I damage my motherboard?

mishimaBeef

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Aug 7, 2010
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Hi, I was building my computer over the weekend and am concerned that I may have damaged my motherboard.

After installing the CPU/heatsink and RAM, I guess I was kind of oblivious to the added weight and I picked the motherboard up by its big heatsink (northbridge heatsink I guess?). Upon lifting, I heard a snap loud enough to make me think the heatsink had popped right off. I let go and it was still on but that snap noise still concerned me as to whether I severed its connection to the motherboard somewhat.

The heatsink seems to be held at two opposing corners by a metal pin with a spring around it and a plastic top piece. After the incident, the spring-pin felt loose enough to compress down somewhat and the heatsink itself felt loose (rocks and slants to a firm touch). Another smaller heatsink located elsewhere on the motherboard has a similar spring-pin setup but when I press these, the pins feel tighter and don't compress much.

The rig started up fine and I haven't had any problems but I'm afraid that later down the road I might see the consequences of this. Idle motherboard temperature reads are 24 degrees Celsius according to PC Probe II (Asus software). My computer has been on for about 15 minutes before this reading has taken place.

Does the underneath of the heatsink have thermal compound on the motherboard? Could it be that I just pulled the heatsink off the thermal compound then put it back on? This should be okay right? Should I be concerned about a potential hotspot due to air bulbbles if this is the case?

Are there any stress tests that I can safely conduct to determine whether my motherboard is damaged? Is there anything I can do?

What do you guys think?
The motherboard is Asus M4A77TD.

Sincerely and sadly,
Chris
 

C1

Platinum Member
Feb 21, 2008
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Advise remounting the heat sink to satisfaction. It may never become a problem in the future, but if it does, the impact will be expensive. (These things have a way of biting one in the ass when they least need it.) Besides, after it's repaired, you'll feel a lot better.
 

mfenn

Elite Member
Jan 17, 2010
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Agree with C1. It sounds (pun intended :p) like you broke the bond formed between the the motherboard's heatsink and the chipset. It should be a fairly simple procedure to unmount the heatsink, clean it, and apply a fresh coating of thermal compound.
 

mishimaBeef

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Aug 7, 2010
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Do you think this is completely necessary at this point? I don't want to poke around there unless I have to. I was even kind of worried applying my own thermal paste to the CPU heatsink.

Others have told me that those temperatures indicate it is fine.
 

mishimaBeef

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Aug 7, 2010
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I would like to monitor the temperatures under load. What is a good program to do this? How long should I run the program?

Someone said if the temperatures for the motherboard stay under 60 C, then the northbridge is okay.
 

mfenn

Elite Member
Jan 17, 2010
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You can use SpeedFan to graph your temperatures. It can take a little fiddling to figure out what sensors correspond to what though.
 

mishimaBeef

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Aug 7, 2010
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Well I have asus probe software that tells me the MB and CPU temp. How about if I just run a typical loading program for X hours and monitor temps near the end of the loading?

What program though? Would that process work?
 

mfenn

Elite Member
Jan 17, 2010
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Well I have asus probe software that tells me the MB and CPU temp. How about if I just run a typical loading program for X hours and monitor temps near the end of the loading?

What program though? Would that process work?

Yes that process would work. Anything stability testing program would be fine: Prime95, OCCT, Intel Burn Test, etc.