No BIOS LED No POST Nothing on Screen (Solved)

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   I spent a bunch of time debugging this issue and solved it, so I wanted to post to help out anyone else in this situation.

My computer was working fine but then one day it would not boot and there was nothing on the screen.  No POST message, no beeps, no nothing.  But all the LEDs and fans were powering up.

I tried removing the video card, the memory, most all other devices nothing worked.

Then I checked the ATX Power supply 24 pin connector.  Forced it on by shorting pins 16 and 17.  Using a cheap multimeter was checked all the voltages.  All the voltages seemed correct, which would explain why the fans were turning on.  But the Power Good (Pin 8) signal was low (50 mV).  The Power Good pin should read +5V to indicate that the power supply thinks it's generating the correct voltages.  This was the issue.  With a new power supply it booted again.

https://ibb.co/b7YN2s6

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ColComputerFixer Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Oct 2021 Status: Offline Points: 35	Post Options Post Reply Quote ColComputerFixer Report Post Thanks(0) Quote Reply Topic: No BIOS LED No POST Nothing on Screen (Solved) Posted: 02 Oct 2021 at 1:50am
	I spent a bunch of time debugging this issue and solved it, so I wanted to post to help out anyone else in this situation. My computer was working fine but then one day it would not boot and there was nothing on the screen. No POST message, no beeps, no nothing. But all the LEDs and fans were powering up. I tried removing the video card, the memory, most all other devices nothing worked. Then I checked the ATX Power supply 24 pin connector. Forced it on by shorting pins 16 and 17. Using a cheap multimeter was checked all the voltages. All the voltages seemed correct, which would explain why the fans were turning on. But the Power Good (Pin 8) signal was low (50 mV). The Power Good pin should read +5V to indicate that the power supply thinks it's generating the correct voltages. This was the issue. With a new power supply it booted again. https://ibb.co/b7YN2s6

ColComputerFixer Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Oct 2021 Status: Offline Points: 35	Post Options Post Reply Quote ColComputerFixer Report Post Thanks(0) Quote Reply Posted: 02 Oct 2021 at 2:03am
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