On Wednesday 10 January 2001 05:48, you wrote:
> Hi all,
>
> I build a AMD 850mhz system. ABit RAID Motherboard IBM 30 GB deskstar HD
> and 256 Mb memory. It's been working for the past 2 months flawlessly.
> Since yesterday the system reboots or hangs.
>
> I rebooted the system  and had a look at the bios system monitor to monitor
> the temp and fan speed. I noticed when the CPU temp goes beyond 109 F the
> system reboots. I am not sure if this is because of a faulty CPU or the
> motherboard. On the mother board the chipset has a separate fan. I
> suspected the memory and swapped memory form another machine, still the
> same.
>
> Has anyone encountered this problem? What could be the problem the CPU or
> the MB.
>
> Thanks
> Sridhar

Current AMD chips do not have thermal overload protection.  This means that 
they can self-destruct, partially or fully, by overheating.  

Socket 370 fans are set for proper tension on somewhat thinner platforms and 
have been known (personally, unfortunately) to crush socket A processors.

Furthermore, the fan vibration is not completely damped by the rubber bumpers 
on the package top, so there is wear on the glass top of the chip.  THis can 
become a critical problem (again, much to my chagrin).

Make sure the heat sink offers a soft bottom (copper plus thermal paste) to 
the CPU and make sure it is approved by AMD for Socket A processors.

And probably you need a new processor.

Civileme

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