Between friends and google, it seems like the cause of this can be:
-dvi cable failure
-dying psu (undervolting)
and I'm not sure what I've done adequately narrows it down?
So I guess I'd like to know if this is
1- indicative of imminent catastrophic failure of some sort (which flickery dots are a early sign of?)
2- just something to put up with or solve somehow until I can afford a new setup (stalled by gpu prices).
system parts: i5 2500 cpu, 16gb ddr3 ram (4x4), sb x-fi pci card, corsair tx2 650w psu, gtx 970 "4gb" strix, msi p67s-c43 board, and a dell s2740L monitor
I first had this issue a few days ago where there'd be an array / grid of flickering blue pixels across any gradiented/grey ish background. It happened in a game I was playing, so i took a screenshot of it, and it was flickering on the screenshot too. When I showed my friends the ss they couldn't see anything amiss.
https://i.imgur.com/xvCibcS.gif kinda what I see (way faster, but you get the idea)
To be clear - it's not just ingame, it's anything dark ish grey like discord, pics in google images, desktop backgrounds, etc.
I shut down my PC and unscrewed the DVI cable from the monitor and reseated it, and rebooted.
This temporarily fixed it for about a day. The dots came back, not as badly, but quite visible on anything grey.
I've temporarily fixed it again by lowering, in NVIDIA control panel, the green+blue channels by about 3% below red, which caused the dots to mostly disappear, as per this video: youtube.com/watch?v=OBNPaN67fFM but some gradients still trigger it.
I've run memtestg80 to see if VRAM failing and it looked okay.
The fact that they don't show up in screenshot to other ppl means that the gpu output is correct?
So the gpu is probably okay.
But when I use my monitor with my ps4 (via hdmi) I don't get the dots at all which means that the monitor is working properly too?
So then, if the issue is the DVI connection, am I able to just.. not use dvi? Like my gfx card has displayport and hdmi ports on the back of it, or are those for other things?
The DVI cable went in straight, and I firmly pressed it up & screwed it in, so idk how it would be coming "loose" or why it'd be dropping signal or whatever. Like just prodding it right now, it's rigid af. I can buy a new cable but if the ports/pins are damaged on either side or dying due to w/e, idk if it'll do much?
I don't know how to test psu.
Idk if worth mentioning but:
- gfx card is permanently affixed to mobo afaik, due to the bleepty plastic pcie lever snapping off - can't reseat it.
- recently (2 wks ago) the pc was in a room baked to 60C ambient (coretemp showed 76C max), but the monitor was not.
Any help/insight would be greatly appreciated, thanks.
Edited by rainraingirl, 22 February 2018 - 07:44 AM.