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Mostly No Signal Detected

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carolinawolverine

PCHF Member
Oct 16, 2022
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#1
I've got a several years old desktop that I build myself. Lately, it will power on (the fans all spin up), but the monitors will just sit at "no signal detected".

In playing around with it a bit, I've noticed that if I power down, pull motherboard battery, wait 30 seconds, put it back in, and boot, some times it will come on and everything will work fine. Other times I have to repeat this five or six times before it will work.

Any idea what is broken here?

Build Details:
OS: Windows 10
Motherboard: ASRock B250M Pro4 Micro ATX LGA1151
CPU: Intel Core i7-7700 3.6 GHz Quad-Core Processor
Ram: G.Skill Aegis 32 GB (2 x 16 GB) DDR4-2133 CL15

I use the motherboard GPU, and typically run two monitors, one from HDMI, and the other from DVI.

Happy to provide any additional details that might be helpful.

Thanks in advance.
 
#8
I'd take it all apart and re-assemble on a piece of cardboard.
be a good chance to clean everything (boards, slots), check everything, re-do thermal paste.
does it have a speaker attached to the mobo so you can hear the POST beeps, in case they change when it does and doesn't start?
 
#12
carolinawolverine said:
I tried connecting a speaker, but didn't hear anything. The speaker is powered by the USB port. Is there any chance that's not up in time to get any beeps?
Click to expand...
yes there is a chance.
best to have one of these little speakers.

1666043794657.png
 
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