Windows 10 - PC keeps losing connection to monitors, monitors go to standby but PC is still on and sound still playing

tompbsmith

Reputable
Jun 23, 2015
13
0
4,510
Hello,

I've had Windows 10 on this build for about 2 years now with no issues. Recently after Geforce Experience updated and Windows 10 updated (within the last couple of weeks) I started getting an issue where the PC would just randomly restart itself, no BSOD, nothing in Event Viewer (except the "Kernal Power" records) and it wouldn't matter what I was doing, playing a gpu-breaking game, coding, watching Youtube, it didn't matter.

After looking on here, I found some threads with the same issue and the answers were the same: completely uninstall GPU drivers using Wagnard and then just install the drivers, not Geforce Experience.

I did this yesterday, the restarting issue has gone but now randomly my monitors lose signal to the PC. I've got 2 monitors, 1 is DVI, 1 is VGA. Basically, my VGA monitor will go black for a second and then goes on standby saying "no signal" then about 1 second later my main DVI monitor does the same. The sound cuts out for about 2 seconds and then the sound comes back. As a test, one of the times I just left it for 10 minutes and the video on youtube just kept playing it's sound and even autoplayed onto the next video. So I believe it is definitely a GPU problem/driver problem, because Windows just seems to carry on fine without realising there's no display output happening. Windows also doesn't make the "device disconnected" sound at all like it does when removing graphics drivers or re-installing them. Since I re-installed the graphics drivers it's happened about 8 times and the PC has been on for about 12 hours in that time. This has happened before and after restarts.

If anybody has any idea what's going on and could give me some advice, that'd be very much appreciated.

Thank you for your time.
 
@miniduise I think you should try a different cable. It is a very uncommon problem. I would think that it is 50/50 a dying/marginal video card or a marginal cable. I've seen this on three PCs and the cable was bad on two and video card was bad on the other. I replaced one 750ti with a spare 750ti, so it was not driver based.
 

mindiuse

Prominent
Oct 31, 2017
4
0
510

I tried 3 HDMI cables and one DVI-D
 

Bad news there. Do you have access to another video card?

 

mindiuse

Prominent
Oct 31, 2017
4
0
510

My friend told me he may have a spare somewhere. But the question is why does it work with my 4tv :/
 

Some devices are more sensitive to marginal links/components.