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Question

PC no longer feeds to monitors after sleep mode

Apr 29, 2020 1:44PM PDT

So last night I turned my PC on after being on sleep mode, it powered on ok but except the monitor didnt wake up and the mouse didn't light up (keyboard lights on ok and my old mouse works fine though). I did all the obvious things like switch HDMI cables, try a different monitor, turning it on and off etc. I've also jumped the BIOS using a screwdriver and replaced the CMOS battery but still nothing and now I'm stumped.

My pc is custom built for games and it's about 5 years old, never had a problem like this before and everything was fine before I put it on sleep. If anyone has any ideas it would be massively appreciated!

Discussion is locked

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Answer
Here's a thing.
Apr 29, 2020 3:09PM PDT

Windows is known to update drivers without telling you so my usual fix is to disable W10's driver update (see google) then install the machine's drivers that worked.

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I cant see any image though
Apr 29, 2020 3:14PM PDT

Is there i way I can do that without being able to see what's happening on the screen?

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I misunderstood you.
Apr 29, 2020 4:00PM PDT

"PC no longer feeds to monitors after sleep mode". To me this means your PC went to sleep and you had to reboot to get it to work. I think you are telling us you are seeing the MONITOR telling you the MONITOR is going into sleep mode. Not the PC.

That means the PC is not supplying a video signal so you make sure by testing this monitor on another PC or video source then you know your PC needs repair.

If you google "The Dead PC" you find there is no single cause or cure. For the forum to give more guidance we'll have to know the monitor is still good (and its cable) then we start with a lot more PC detail. The usual first steps (as you see from that google) is to make the PC as small as possible. We don't need all the RAM, any drives and on some models can use the onboard video to test.

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Yeah it's a complicated one
Apr 29, 2020 4:08PM PDT

It's so peculiar I didnt really know how best to word it. I've been using the same monitor to play my PS4 all day so its definitely not the monitor, and because it's so specific I cant really google it properly. I've done all the fixes that have worked for similar situations but they havent worked for me which is why I'm so stumped.

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Which means
Apr 29, 2020 5:09PM PDT

We have to know a lot more about the PC such as make, model, age and if self built what parts since some are known to fail over time. I rarely find "exact matches" to failures online. I do however use the make it smaller method time and time again.

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I'll give you some details
Apr 29, 2020 5:22PM PDT

It's been years since I built my pc so I've lost track of the exact specs a little but I'll do my best here.
I have a EVGA Nvidia Geforce GTX 970 (4GB I think)
EVGA 850 Watt gold power supply
Very unsure of the processor, I know its AMD Radeon 850 something
16 GB RAM
And some fans I installed no clue of the brands.

Also i gather that you think perhaps removing a stick of RAM might do something?

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Small world as it is.
Apr 29, 2020 6:25PM PDT

My son's GTX 970 has failed. And I'm seeing a lot of 9x0 boards failing now.

-> As to the question about RAM, the accepted method for troubleshooting The Dead PC (as you can google) is to make it as small as possible. In your case you have an older PC so you may find with min parts you may not see a display so you have to test that GPU in another PC and another card in this PC. The results tell us what to try next.

-> But first, two things.
1. Remove the power cord. Press and hold the power button for 60 seconds, release, apply power and test. Sometimes helps.
2. Replace the CMOS battery with a new one. When low this can hold the PC in reset. Some push back on replacing this under 99 cent part. Please consider this as the cheapest part it could be. Worth the gamble.

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Great,
Apr 29, 2020 6:32PM PDT

I've already replaced the CMOS battery today to no avail but I'll try that power button thing tomorrow. I'll also try powering it up and hitting F8 and see if anything happens. If I cant fix it I'm gonna take it as the excuse to do a big upgrade and get a new pc. Thanks for the help!

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I would try booting up
Apr 29, 2020 4:07PM PDT

in safe mode ( Google that ) to do a system restore.
If you can't do that , I would try booting up a Linux disc/ flash drive if you have access to another computer to create one. ( Google that as well ) . This would tell you if there's a hardware problem or software problem

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Answer
Monitor sleeps
May 1, 2020 9:51PM PDT

I have the same issue. After weeks of just powering down and rebooting i discovered that just turning the monitor off and then back on makes it renew the video signal. I don't know why but it works for me.

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Answer
Monitor sleeps
May 1, 2020 9:54PM PDT

I have the same issue. After weeks of just powering down and rebooting i discovered that just turning the monitor off and then back on makes it renew the video signal. I don't know why but it works for me.