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CPU fan not detected

When starting my computer, ''cpu fan not detected'' appears and I need to press F1 to continue. My fan was very noise and now it obviously is not working. What should I do? Thanks!

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Dear User,

pl check your cpu fan working properly or not when pc start.
when pc shut down pl check fan moving by our hand and smooth moving or hard moving pl check it.

Your solution is change cpu fan.

Regards,

Ravindra Shah

Posted on Jun 29, 2009

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Try to check the connectivity of your fan if it is still working or not. Also try to check  the power if theier is a electricity supply in the connection of your CPU fan. Else you have to find another fan,.

Posted on Jun 29, 2009

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Replace ur cpu fan...... if u hv a problem with SMPS the fan which u can see at the back of ur cpu do replace it.. this SMPS provides all the power requorements for ur CPU

Posted on Jun 29, 2009

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How do I access the BIOS settings for the P5LP-LE motherboard. The startup key says to press F1, but pressing F1 does nothing.


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Try clearing the CMOS settings as explained on this page, it should clear out any passwords and will set the BIOS settings back to factory settings.

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Hi,

First, if the CPU fan is not spinning properly, you should NOT run the system. The fan needs to be replaced.

If the fan is running normally, you may boot by pressing F1.

Before replacing with a new fan, you can first try re-seating the plug for the fan in your computer. The fan's plug may have been bumped or loosed. Re-seat the plug located at J1F1 as shown in the picture below and be sure that it is properly connected.

Hope this helps.
a4ffd17.jpg

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It isn't detecting your fan as the fan may be dead or the sensor is dead. Both are not repairable but cheaply replaced and fixed with a new fan. The cost of the replacement cpu fan is not that much compared to a cpu. So don't try to make it last a bit longer by hitting the f1 to continue. That will catch up with you pretty quick.

If you want to double check you need to look at either the cmos setup section of a system monitoring software and check to see cpu fan speed and cpu temps. You may not see the speed but you should see the temps. If the temp is getting over 55-60 or more shut down and go get the fan. It's dead. If you see the rpms showing then you might have a motherboard problem.

However I would say you have a dead fan. Replacements are $5-15 and you need to just crack the case and pull the old one and put in the new one. You can take it to a tech but they will charge you to check it out again and then ti replace the fan and some shops will insist on new heat sink etc (those don't ever ever wear out or go bad at all)

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