Question Suspicions about PC fault diagnosis ?

[R3ZO]

Over the last week my monitors have been shutting off and losing signal while gaming. It happens and they do not turn back on, unplugging, independent monitors as in leaving one in and not the other and vice versa. Nothing I do brings back the display. I've even restarted my pc and it's booted up with no display as well. Just happens to be a few restarts and it's okay or just giving up for the evening and logging back on the next day. Event viewer gives me LiveKernelEvent errors (117, 141, 1a8, 1b8).

So I took it to someone who might have a better idea, after 2-3 days he contacts me and tells me it's one of my monitors. Apparently in his words exactly "Despite testing it with another computer, utilising multiple different connectors and cables, the monitor would repeatedly flicker and cut in and out."

I never had flickering or maybe we have different definitions - my displays would be absolutely fine, idle for hours or watching stuff and then gaming? anywhere between 30 minutes to 2 hours and they're off. Besides, if it was one monitor, it feels slim that it would make the other one go too although this could be perfectly possible.

Anyway, I feel really weird about it being "just a faulty monitor" and then him offering me alternative options to purchase. I have since brought my PC back home with the monitors and haven't had any issues so far. Also, annoyingly he didn't label which monitor was the faulty one and I have two identical monitors, so I tried each of them individually and with another PC and they were fine - no flickering.

How do these connect? Could it be just my monitor or should I question it?

 

[Lutfij]

Welcome to the forums, newcomer!

When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

"Despite testing it with another computer, utilising multiple different connectors and cables, the monitor would repeatedly flicker and cut in and out."
So the person you took it to hooked the monitor up to different display outputs to rule out the driver and/or OS weren't to blame. How old are the displays you speak of? Depending on your monitor, there might be a firmware update that you display might be pending...? If not, then the display might've conked out due to wear and tear or age.

I tried each of them individually and with another PC and they were fine - no flickering.
The only thing that's changed since you shipped it out and then brought them back in was the power source, are you sure your wall outlet doesn't have a grounding issue?

 

[R3ZO]

Sorry! Please find below.

CPU: i7-9700K
CPU cooler: Unknown exact but looks like the Be Quiet! BK030 Pure Rock Slim 2 Air CPU Cooler, 9.2cm PWM Fan, 130W TDP, CPU Cooler
Motherboard: MPG Z390 GAMING PRO CARBON (MS-7B17)
BIOS Version/Date American Megatrends Inc. 1.B0, 12/10/2020
Ram: 64gb (4x16) CORSAIR Vengeance LPX RGB 32 3600 MHz DDR4 Memory Kit - 2 x 16 GB
SSD/HDD: Samsung SSD 980 1TB, Seagate Barracuda ST3000DM007 5400 3TB HDD, ADATA Ultimate SU630 240GB
GPU: NVIDIA GeForce RTX 4060 Ti
PSU: AORUS P750W 80+ GOLD Modular
Chassis: Unknown
OS: Microsoft Windows 11 Pro
Monitor: LG 24GL600F 24” 1080p 144hz

This PC was prebuilt and I bought it in 2020, alongside the monitors at the same time.

My concerns with the monitors being the diagnosis are they apparently tested them and claimed one of them flickered in and out etc - but I have them back set up at home and none of that is happening and I never saw it happening even prior to the incident except for under heavier loads and it wasn't necessarily flickering it was more shutting off entirely. I now have both monitors set up as they were prior to going in as I tested them independently and didn't see / notice any problems with them.

Hope this helps and thank you for replying to me.