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Old 08-19-2006, 05:48 PM   #1 (permalink)
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Default need advice, is my mobo fried?

I've tried pretty much everything here, I'm just about ready to go buy a new mobo.

I bought a passive cooling heatsink for my A8N-E mobo's northbridge chip (nforce4, runs fairly hot but zalman guarantees their chipset cooler will work in any non OC'd situation) as I found
the stock fan was making far too much noise. I went through the standard procedures for performing this task, something I've done numerous times before. I did find however that I needed to remove some sort of adhesive thermal tape surrounding the chip in order to ensure a clearn work surface (thermal paste remover had slid in behind it).

anyways...after installing my new NB heatsink I proceeded to boot up my computer. The computer booted up fine originally. I started by going into the bios to disable the NB low fan speed warning. No problems yet. After saving my bios settings I rebooted my computer.

As my computer rebooted it suddenly dropped it's video signal and proceeded to beep (pheonix bios beep 2-1-1-1 which evidently serves no real use in trying to identify your problem). I felt the heatsink on the NB to see if it was hot or not. It was incredibly hot which re-assured me that my installation was performed correctly as you would expect heat to be transfered to the heatsink. I went on to double check every single component in the system, everything seemed to check out.

My next step was to re-install the originally supplied HSF, which turns out didn't correct my issue.

Over the course of my several reboots during various stages of my troubleshooting I always found that if I let the system off for a long enough preriod of time I would obtain a video signal (and no beeps) but only for a short time, then the video signal would kick out again. This would then lead me to have to reboot, which you guessed, would result in a dropped video signal and the 2-1-1-1 beeps.

All of this leads me to believe that 1 of 3 things has occured. (1) that I somehow incorreclty installed the HS/HSF twice and that the NB is shutting down the system as a safetey measure (reinstalling a 3rd time may do the trick). (2) I incorrectly installed the first HS and permanently damaged the NB chip causing my computer to behave eradically (need to buy a new mobo if this is the case :<). (3) I installed the HS correctly but this particular Zalman product sucks and destroyed my NB chip despite assuring me that it would not do so (still need to buy a new mobo but will swear off all zalman products).


I've just spent the past 6 hours trying to remedy this situation through hands-on troubleshooting and extensive internet searches. Quite frankly I'm exhausted and any feedback to this email would be very much appreciated.

Thanks in advance for any advice you can provide.

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Old 08-19-2006, 07:13 PM   #2 (permalink)
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is it onboard video or a card. try another card if that is possible sounds like the card is running hot perhapse and not the NB. also what does it say that beepcode is for?


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Old 08-20-2006, 12:44 AM   #3 (permalink)
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I would think it is a heat related problem. Thats why everything worked when it was cool. I would say the Northbridge is toast. Of course I cant be sure but it just sounds like it to me...
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Old 08-20-2006, 10:26 AM   #4 (permalink)
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I'm not really sure what the beepcode is for. Based on what the pheonix bios documentation states it's an error code 40h, which doesn't exist anywhere on their charts...hehe

I think I'm going to try reinstalling the original HSF once more today after I find some thermal tape. Hopefully I'll have some luck.

Thanks for the responses so far.
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