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ASUS P5GD2 CHASSIS INTRUSION PROBLEM - FATAL ERROR...

Posted on 2005-04-05
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Last Modified: 2008-03-17
Dear Experts,

Have the same problem with my new ASUS P5GD2 Basic; however, when I first set up the machine 1 week ago, I had connected the intrusion detector on the chassis (a Thermaltake Tsunami) to the mobo; during the trials I did not open the case.
and no problems were observed.

Last night, I removed the cables and opened the case to add a second SATA HD, and connect my chassis and CPU fans to a  Aerocool Aerogate fan controller (I added power and ground cables to the sensor cable (yellow) heads - which enabled me to observe the RPMs on its own, but I could not control the speed - arranged the cables, also added a system speaker....

When I turned on the PC after this, I observed the "fatal error...system halted" message, removed the cover, removed the cable, shorted the jumper for chassis intrusion, however nothing happened...

Could this problem be caused by a fan cable shorting with the chassis?  How could this happen after some minor modifications unrelated to the mobo in a functioning system?

Regards,
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Question by:aaktar
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3 Comments
 
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Expert Comment

by:Callandor
ID: 13708043
Your motherboard probably has a cpu fan rpm detection circuit, so you need to connect the other end of the fan control to the motherboard.  In other words, you can't just leave the cpu fan header empty; it has to know that there is a working fan connected.
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Author Comment

by:aaktar
ID: 13708323
A nice guess, however the cables were not hooked up to the motherboard in the initial setup (when the PC worked flawlessly) ; they were connected to the fan controller already...  What I added was the power and ground wires to control (in addition to monitoring) the fans...

So, I don't think there's a connection btw. the mobo fan monitoring and the error I stated... Thanks for the reminder, anyway.

AA
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Accepted Solution

by:
Callandor earned 750 total points
ID: 13708479
There is always the possibility of static electricity affecting a component while you were working in there.

Since your system is non-bootable, I recommend going back to basics to troubleshoot it.
Take the motherboard out of the case and put it on a nonconducting surface, like wood or a cardboard box.  Install one module of RAM, the cpu, and the video card, and reset the BIOS after installing the cpu.  Do not include hard disks, other PCI cards, or other peripherals.
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