Random white, black and coloured boxes flashing on the screen when trying to watch a video or play a game

[DesperateGuyhelp]

Adding to the title: Sometimes it's gonna randomly freeze for a bit then a bunch of white/black pixelated boxes will show up on the screen.

I'm 99% sure that this issue is caused by my GPU (a 3-year-old ZOTAC GTX 760) but I want to be perfectly sure it's dead before I get to replace it given that they are way too expensive in my country.

I've already tried: reseating the GPU, making a clean installation of stable drivers.

The next one on my list before replacing it is trying to underclock but I do not know how to do that.

ANY suggestions are welcome and I'm willing to follow recommended steps if possible.

 

[scout_03]

try to test it in another system with the driver on and if you have same issue gpu is out .

 

[DesperateGuyhelp]

try to test it in another system with the driver on and if you have same issue gpu is out .

Yeah unfortunely I have no other systems at my disposal as of now =/. Is there any way of disabling the offboard GPU so I can use the integrated one and see if the problem persists?

 

[scout_03]

you have to remove it from system and plug monitor to onboard that is the best way .

 

[DesperateGuyhelp]

you hsve to remove it from system and plug monitor to onboard that is the best way .

Hey, I unplugged the GPU, reset the BIOS and I'm now using the onboard GPU. No problems so far! I'll get a replacement for my old warrior GPU asap.

Should I use DDU to uninstall something before installing a new GPU?

 

[scout_03]

you should remove all previous driver from old gpu with him in system using ddu .