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Reset CPU speed at boot up

By shantie ·
Asus P4s800 m/board 2000Cell cpu. I have noticed over the last year that occasionally at boot up I am told that the cpu speed has been changed and to reset this in Bios and restart computer. This has happened since new, seems to happen after downloading/installing/uninstalling something, causing an error then next reboot have to do this with the cpu. Is this a fault with the Bios, all other Bios settings do not change and are up to date, so can not be battery. Or is this a fault with motherboard/CPU. I have just ordered another M/Board to see what happens. I sell a lot of these m/boards and alway use Cell cpu's, first time this has happened. Any ideas Thank you

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by TheChas In reply to Reset CPU speed at boot u ...

Check / replace any fan that plugs into the motherboard.

Many fans generate too much electrical noise on the tach output line.

I have seen this cause various BIOS behavior problems including the one you are seeing.

Also, on a reboot, some of the BIOS code is bypassed. It's possible that there is an error in the CPU speed detection algorithm on a warm boot.

You might try switching from automatic to manually setting the CPU FSB and multiplier in BIOS settings.

Chas

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by shantie In reply to

I have just installed XP on this system, was running Win98. If I get it back again for the same error I will try the cpu fan. I think you could be right about this, as noticed although I have the same motherboard that her fan run slower than mine. So could be the problem. Thanks for the reply

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by shantie In reply to Reset CPU speed at boot u ...

thanks for the quick response I do not get the computer back until Thursday and will try what you suggested then, thank you

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by Blackcurrant In reply to Reset CPU speed at boot u ...

Hi

Another thing to make sure of is that the latest version of the BIOS is installed.

Good luck

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by shantie In reply to

sorry but I use a lot of these boards and never had to update the Bios, so do not think this is the problem but thanks for the answer

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by Jessie In reply to Reset CPU speed at boot u ...

I have seen that error be the battery... it's worth a shot, mbd batteries are generally pretty cheap. If you've checked everything else, removed each plugin one by one, down to just video, memory and cpu on the mbd. If the problem doesn't go away, it's either battery, memory, video, or cpu... I'd start with replacing the cheapest first (battery) then go from there.

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by shantie In reply to

Although I think it could be the cpu fan it is a good idea to always keep the battery in mind, as just posted another question that I think was caused by the battery and cmos settings, so if I do get this system back will try fan and battery, thanks for the reply.

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by shantie In reply to Reset CPU speed at boot u ...

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