Question about Dell OptiPlex GX520 PC Desktop
Dell OptiPlex CPU FAN is runing at high speed
Check the power supply for problems.
My computer wouldn't run thru the post up, no beep codes, only the fan running on high. The power switch didn't shut the computer down, it needed to be turned off at the power supply, or unplugged.
I replaced the motherboard to no avail. Only after changing out the power supply did it work correctly.
My theory is that the power supply quit supplying power to the motherboard, but kept supplying 12 volts to the fan.
The good news is that power supplies are cheaper than motherboards and easier to replace.
Posted on Oct 24, 2009
Change the setting in the BIOS menu. reboot your computer.. when you see the dell logo.. press F1 (or F2 if F1 doesn't work) button until you see the BIOS screen. Check for fan options and change it
Posted on Jun 20, 2009
Take your memory out and try turning it on. You should get a beep code. Put one memory stick back in and turn it on. If the fan still runs high try a different memory slot and if that does not work try a different memory stick.
My experience shows that their could be a memory problem.
Posted on Jun 12, 2013
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Posted on Jan 02, 2017
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