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Old 03-23-2006, 07:38 PM   #1
badmofo666
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Problem with cpu after heatsink install.


I don't know if this is the right forum for this, but I guess it will be moved if not.

Anyways, I installed a new heatsink and fan on my Athlon XP 3000+ and I think I may have damaged either the cpu or motherboard.

After booting the system back up, I noticed that my cpu's clock speed changed. It is supposed to be at ~2.1Ghz/333Mhz but now it's at ~1.7Ghz/233Mhz. It's a Compaq motherboard (ASUS A7V8X-LA) so I can't change any of the clock speeds manually.

My question is what would cause this to happen? Is the motherboard, or cpu damaged?

Also, before this happened, my motherboards system clock wouldn't keep the right time after shutting down the computer, replacing the battery hasn't helped either. What would cause this? And could this be related?
 
Old 03-23-2006, 08:55 PM   #2
nerdful1
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new, but paying member to lq that has helped me so much, so bear with lousy answers...maybe battery is not installed correctly or it was shorted out while mounting. If your processor is working. it is unlikely it is damaged or it would be dead. why replace heatsink etc? to reduce noise? maybe you knocked of a jumper on your board. Maybe you did not use good heatsink grease on your replacement and MB is throttling down your speed. Because of high temperature.

Last edited by nerdful1; 03-23-2006 at 08:59 PM.
 
Old 03-23-2006, 10:20 PM   #3
Electro
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It could be an incorrect mount of the heatsink. What I mean you may have put too much heatsink grease/paste that could cause it to overheat and reduce the frequency. The amount should be close to nothing. Also the amount of pressure that is apply to the processor can effect the heat conductivity of the heatsink. I recommend using thermal tape or thermal pad because it reduces any error by the installer.

IMO, ASUS motherboards are thinner than most motherboards that I have seen from other manufactures. You could have damage the traces thats comes from the CMOS battery which is strange.
 
Old 03-23-2006, 11:07 PM   #4
badmofo666
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I replaced the heat sink because the processor was running 65C after gaming. After installing heat sink the hottest I've seen it is 42C but runs at 1.7Ghz all the time, doesn't throttle at all. When I boot my bios screen always says 1.7Ghz now.

There aren't any jumpers on the board except to clear bios settings, which I already tried.

My only guess is that something is damaged. But not sure if the motherboard or processor is causing this?
 
Old 03-24-2006, 03:04 AM   #5
AwesomeMachine
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There are tiny, tiny gold dots on an Athlon processor. When these dots are shorted together, as is done to lock the processor, it makes it run at different speeds. So, if you got some goo on those dots you might have shorted the wrong ones together, thus making the cpu run slower. Take the heatsink off, clean everything really, really well with "Goof Off" latex paint remover; but don't get it on the rubber pads, or under them. Use a Q-tip, carefully. Use AS-5, or whatever number they are up to now as thermal transfer paste. Use the instructions on the website. That's "Arctic Silver". I get 600 MHz overclocks with that stuff, easy; 800 MHz even, on air. Only the tiniest amount of paste is needed. This sounds like a paste problem.
 
Old 03-30-2006, 02:50 AM   #6
badmofo666
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Quote:
Originally Posted by AwesomeMachine
There are tiny, tiny gold dots on an Athlon processor. When these dots are shorted together, as is done to lock the processor, it makes it run at different speeds. So, if you got some goo on those dots you might have shorted the wrong ones together, thus making the cpu run slower. Take the heatsink off, clean everything really, really well with "Goof Off" latex paint remover; but don't get it on the rubber pads, or under them. Use a Q-tip, carefully. Use AS-5, or whatever number they are up to now as thermal transfer paste. Use the instructions on the website. That's "Arctic Silver". I get 600 MHz overclocks with that stuff, easy; 800 MHz even, on air. Only the tiniest amount of paste is needed. This sounds like a paste problem.
Thanks man, I think that's the problem, becuase I did put ALOT of paste on it. I'll probably work on it some more this weekend, when I finally get some time off work and school. The only other time I messed with a processors heatsink was when I built one of them old Slot A Athlon computers back in the day, and I didn't have to worry about shorting anything out since everything was enclosed.
 
Old 04-05-2006, 01:09 AM   #7
AwesomeMachine
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Smile

Quote:
Originally Posted by badmofo666
Thanks man, I think that's the problem, becuase I did put ALOT of paste on it. I'll probably work on it some more this weekend, when I finally get some time off work and school. The only other time I messed with a processors heatsink was when I built one of them old Slot A Athlon computers back in the day, and I didn't have to worry about shorting anything out since everything was enclosed.
I know if you follow the instructions on Arctic Silver's website and use Arctic Silver, it will all work out.
 
  


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