Black screen

I was having problems with a previous desktop in that the monitor would occasionally go completely black for a few seconds before coming back. It was a fairly old desktop running windows 7 and the monitor (LG) was of a similar age. After other problems with the desktop I decided to buy a new one which I set up running with Windows 10. The screen was still going completely black every so often, so I got a new monitor (Samsung S22F350). I have set up the new monitor with a new VGA cable and am still having the same problem, just as frequently (if not more so) than previously. So I have a new desktop with new ethernet cable, new monitor, new VGA cable, even a new mouse and keyboard, but still get the same issue. I also run a laptop (connected to the power supply so there can be no power issues) and tablet off the same router with no issues. I really have no idea what the issue can be. Does anyone have any ideas ?

Tech Support Guy System Info Utility version 1.0.0.4
OS Version: Microsoft Windows 10 Home, 64 bit
Processor: Intel(R) Pentium(R) CPU J4205 @ 1.50GHz, Intel64 Family 6 Model 92 Stepping 9
Processor Count: 4
RAM: 8010 Mb
Graphics Card: Intel(R) HD Graphics, 1024 Mb
Hard Drives: C: 916 GB (864 GB Free);
Motherboard: Dell Inc., 00FKMJ
Antivirus: Windows Defender, Disabled

 

Click on the Windows button and then type Power. When the options come up, choose Edit power plan. What's the time set to for turning off the monitor? This isn't a Lenovo PC, is it? The reason I'm asking: I've worked with quite a few Lenovo machines which had their own power management software and it could go screwy sometimes by turning off the monitor after less than a minute.

 

Hi,

Thanks for the reply. No, it's Dell. Both the turn off and sleep functions are set at 30 minutes.

 

Are you doing anything specifically at the time when these black-outs occur? Running particular apps, playing games? I would suggest logging times when these events happen, to see if there's a pattern to them or, conversely, see if it's randomised. Moreover, when logging the times I'd also recommend checking Event Viewer to see if anything correlates in the logs with these events.