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General discussion

POST recognizes a 1250 Mhz CPU instead of 1670 Mhz

Feb 3, 2004 4:49AM PST

My PC worked fine for 6 months. But now, under heavy system load (games, ...), the system (apparently the MB, not the OS) shuts down the PC. When I restart, the POST recognizes a 1250 Mhz CPU (I have a AMD Athlon XP 2000, thus 1670 Mhz). It says that the CPU is overclocked and doesn't load XP. The CPU has around 90

Discussion is locked

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The "crash" simply caused your mobo to drop
Feb 3, 2004 4:55AM PST

your memory bus/FSB back to 100 rather than 133 as a protective measure.

Just go into the BIOS and set it back to the desired [some mobos will call it 200 266rather than 100 133]

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Time to make this a warranty issue.
Feb 3, 2004 5:14AM PST

That's a very new machine. Contact the maker since at 90C that's within the maximum of the CPU temperature and it's likely to have a very short life.

For now, you can remove the case cover and point a small fan at the inside until the vendor fixes the machine.

Besides fans and good airflow, small power supplies can cause extra heat. Try to get the vendor to fit a 450 or larger Watt supply.

Bob

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Sorry. I missed that severe overtemp issue. Robert is
Feb 3, 2004 6:56AM PST

correct in spades.

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Re:POST recognizes a 1250 Mhz CPU instead of 1670 Mhz
Feb 3, 2004 9:08AM PST

Your system did a "safe shutdown" via the bios. It got too hot and the "overtemp" feature kicked-in, especially if beeped like crazy before the shutdown. The overtemp is a cause for concern and prolonged operation, especially with a AMD cpu will eventually breakdown or fail outright. You need to verify the system fans are working 100%. if you've recently added anything it may have been the last straw sorta speak and the result what you're experiencing. Review the bios setting and verify the FSB is what it should be as it seems the FSB got hosed, reset it. usually, in heat build-up, open the case, place a household fan to blow into case and see if things settle, if they do then find out the heat build-up cause. As the others mentioned, a power supply or intermit fan can be the cause. Also, reroute the cables, wire harnesses to better the "airflow" and if possible add an extra case fan to help exhaust the heat build-up. You should also look into a better cpu fan as "gaming" will place extra stress on the system as its demands put the system into extreme overdrive if all the goodies are enabled. Last, evrify the cpu is what you paid for and not "gimicked" as a higher rated cpu. This maybe all mute if damage is started and will fail later, but if any warranty, use it. Sad

good luck -----Willy

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Re:POST recognizes a 1250 Mhz CPU instead of 1670 Mhz
Feb 3, 2004 10:25PM PST

First of all, thanks to everybody for your efforts.

I checked the machine, and found something interesting. The vendor seems to have forgotten to remove a plastic foil from the cooler, which never struck my mind until it peeled off... Furthermore, the cooler was pretty dusty.
Now the PC starts at around 60

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You have a future issue.
Feb 3, 2004 10:34PM PST

"Now the PC starts at around 60

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Not same temperature after BIOS Flash
Feb 13, 2004 7:28PM PST

Thanks for your tips Robert.

Something intersesting :

I flashed the BIOS of my a7n8x deluxe Mb, and now the temp in the Bios is around 50

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Re:Not same temperature after BIOS Flash
Feb 13, 2004 10:37PM PST
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Re:Not same temperature after BIOS Flash
Feb 14, 2004 1:07AM PST

"I flashed the BIOS of my a7n8x deluxe Mb, and now the temp in the Bios is around 50