[Win10, Win8.1 x64] Artefacts fill screen randomly, freeze and sound stutter after ~10 seconds and h

[Shoar]

Posting this for a friend since isn't getting much help on /r/techsupport and I figure Facepunch has a much better clue of what's going on

[QUOTE]I'll start with my specs and then describe the problem.Cpu, memory and motherboard are all 7+ years old:
GPU: Asus 750Ti
PSU: Corsair CX500
CPU: Intel Core 2 Duo E8400
Memory: Some kind of Kingston DDR2
Motherboard: Gigabyte G31M-S2L
Sound card: Asus Xonar DG 5.1

[B]Problem:[/B]
I recently bought the GPU, when I found out that the PSU I had was making a high pitched sound and powering off my PC on load I bought the CX500 PSU to replace it. I also bought a new HDD (WD Blue 1TB).

I installed the Windows 10 Technical Preview to this drive and everything was fine. However, I eventually started having these crashes where my screen will fill up with yellow blocks which are spaced apart evenly, sound will keep playing for about 10 seconds and I can still move my cursor (however clicking things seems to do nothing, one time the cursor artefacted and was still movable). Eventually audio will just loop constantly until I force a reboot.

While the screen is frozen and the audio is stuttering, certain things on screen such as window title bars, buttons and such will flash constantly with multiple colours (not every time, sometimes there'll just be the block artifacts).

This happens out of games, I even had it as I shut the computer down once, on the "shutting down.." screen.
I put it down to windows 10 being beta and the drivers being buggy and went back to windows 8.1 and went without an issue.. until today, one or two weeks later where the [I]exact same thing happened
[/I]
I've run all sorts of benchmarks and stress tests on the GPU and never had any crash or artefacts. CPU and GPU temperatures are both under 60C and I can't reproduce the crashes [I]at all[/I] Does anybody have any idea of the cause of this? I was thinking RAM could be likely, but I'd like a few ideas.

Thanks! and sorry for the wall of text with terrible formatting.

[B]EDIT: It happened again and I got a picture this time[/B]
[URL]http://i.imgur.com/wm4W9rp.jpg[/URL]
[URL]http://i.imgur.com/SJF0qHO.jpg[/URL]
In the second image you see these horizontal lines near the cursor, those follow it until the system locks up as described above.

[B]EDIT2:[/B] I should also mention that before I got this GPU, I had a somewhat similar crash scenario with my old GPU. While playing games or anything else, my screen could randomly go black, audio stutter for a second or two and then reboot.
Could this indicate that both of the GPUs are fine and it's something else entirely?[/QUOTE]

Thread @ [URL]http://www.reddit.com/r/techsupport/comments/30r39q/win10_win81_x64_artefacts_fill_screen_randomly/[/URL]

[Scratch]

There was a thread a few weeks ago with the same problem, see if I can find it

[editline]31st March 2015[/editline]

[url]http://facepunch.com/showthread.php?t=1456396[/url]

[Paintry]

[QUOTE=Scratch.;47428686]There was a thread a few weeks ago with the same problem, see if I can find it

[editline]31st March 2015[/editline]

[url]http://facepunch.com/showthread.php?t=1456396[/url][/QUOTE]

I created the Reddit thread.

Yeah while the artifacts look the same (although they're multiple colours instead of always yellow); my artifacts appear, hang my computer and then they're never seen again until it happens in the future, while that person sees them in BIOS.

I always imagined that if the GPU were failing/faulty it'd be way easier than it has been for me to reproduce the problem; I can max out my GPU in Unigine or Furmark for hours and have nothing happen.

It feels so random.

[strazyyy]

This is the exact same thing that happened with my GTX 280, the card died after a few weeks and I bought a new one.

[Darkimmortal]

[QUOTE=Jellyman;47428940]I always imagined that if the GPU were failing/faulty it'd be way easier than it has been for me to reproduce the problem; I can max out my GPU in Unigine or Furmark for hours and have nothing happen.

It feels so random.[/QUOTE]

Not all GPU death symptoms are correlated with high load/temperatures