9/6/2005
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Catch 22 with the CPU fan and BIOS settings
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I've just put a new CPU fan in my machine coz the old one was knackered but encountered what seemed like a catch 22 problem. The new fan is slower than the old one which presents a problem for the BIOS. When the computer starts up the BIOS checks the CPU fan speed. If it's not fast enough the computer won't continue starting up, emits loads of irritating bleeps and then shuts down. Now because my nice new slow speed (hence quieter) fan runs slower the BIOS says fault and ...etc. So the obvious thing is to change the BIOS settings. But, here's the catch 22, you can't get to the BIOS settings until after the computer has OKe'd the fan speed. What to do? Well luckily for me there was an old fan lying around. It was far too small for my chipset but I bunged it on just to see if it could help get through the POST (Power On Self Test). To make sure my chip didn't overheat I pointed a room fan straight at it. It worked, the little fan ran at 5100rpm and I made it to the BIOS settings. Seems like you can't change the rpm speed the fan is supposed to run at with my BIOS. The only choice you have is to disable that part of the POST which I did. And now my new fan runs and here I am back online. Which just leaves one question. Anyone know where you can see the CPU temperature or fan speed from Win XP? |
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