System won't boot but cpu fan spins and lights come on

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Anesu Mlambo - Nov 18, 2017 at 03:41 PM
xpcman Posts 19530 Registration date Wednesday October 8, 2008 Status Contributor Last seen June 15, 2019 - Nov 18, 2017 at 07:19 PM
Help!
When I press the on button the cpu fan turns on just fine and same with the gpu, but nothing is displayed on the monitor. I've tried multiple monitors (which I know to be working) and serveral cables but still nothing. I connected my old mb with a different cpu and the same thing happens.
P.s. I've gone through most of the troubleshooting I can find online ie Clearing CMOS and swapping out ram and still the same thing happens. Please tell me this is simply something I'm doing wrong
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1 response

xpcman Posts 19530 Registration date Wednesday October 8, 2008 Status Contributor Last seen June 15, 2019 1,825
Nov 18, 2017 at 07:19 PM
The one common part appears to be the power supply.

The CPU needs 12 volts the lights and fans run on 5 volts. The 12 volt part of the power supply might be broken.