Artifacts and complete screen freeze, help!

[Indonesian]

(This is a repost from the graphic card subforum as i think i shouldve posted it here.)

 

TLDR version is my pc starts to artifact and sometimes straightout freeze, so i need to hard reset. 

 

Now for the long part, i have a pc with a gtx 780 lightning, 8 gb ram, fx 8320, ss760xp2 PSU. I use this pc for pretty much 2 years until now weird things start to happen. Sometimes i hear the device disconnected/connected swoosh sound but there's nothing happening on my screen, im not even using any flashdisk. So i just ignore it. But then out of nowhere, when i play BF4, my screen went full colored in sepia and starts to flash in many colors. I alt tabbed out of the game, get back in, and textures flies and stretch across my screen. So i close my game then restarted my pc, play warframe, and same thing happen. I thought its overheating issue, so i stop and just watch youtube videos... Until i met this screen with green dots all over. Cant do anything. Restarted my pc again, but now i got error43 in my device manager for my gtx780. Had to hard reset it, watch more youtube, and there's green squares in many part of a video.

 

At that point i dont know what to do and try to download the newest driver, but my screen just froze so often, cant even ctrlaltdelete, so im scared to try and mess with drivers. (Sometimes i can control my mouse, but the entire screen froze).

 

 

Now, i can start my pc and do stuff, but if i game fullscreen, i get fullscreen artifact. Game at windowed, i get texture artifacts. If i leave the computer for like 10 minutes doing nothing, it would froze. There's 0 bluescreen involved so its hard to diagnose.

 

So guys i really need help, i dont know what to do here. I didnt do anything to my pc beforehand.

[Charcoal_]

Have you overclocked the GPU at all?

[Lyte Starr]

This sounds like your graphics card may be going.  If you have the chance try it on another machine.

[Indonesian]

1 hour ago, Charcoal_ said:

Have you overclocked the GPU at all?

It's at factory OC and i never fiddle with it.

 

1 hour ago, Lyte Starr said:

This sounds like your graphics card may be going.  If you have the chance try it on another machine.

I only have 1 pc... and I dont have that much too spend on right now

[Charcoal_]

17 minutes ago, Indonesian said:

I only have 1 pc... and I dont have that much too spend on right now

Any friends with desktops that you could borrow for a moment to try your card?

[Indonesian]

13 minutes ago, Charcoal_ said:

Any friends with desktops that you could borrow for a moment to try your card?

My only friend is this one pc

.. I do have friends but they're distant, so no.