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Removed my SLI and extra 1080, started up fine, froze, and now video won't display (self.buildapc)

submitted 2 months ago* (last edited 2 months ago) by 5oap10116 to c/buildapc

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Im building my wife a PC and now that my SLI is useless (for a few years now), I figured I'd give her my extra GPU.

I disabled the SLI in the control panel, powered down, popped the SLI and 2nd GPU out and gave my wifes pc the extra 1080. My PC started up fine, I booted up a game, and about 10 min in, the screen froze for about 10 seconds and then appeared to restart and now I have no video output. Did I brick my gpu? Any ideas on how to proceed?

I'm only panicking a lot.

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[–] NameTaken 3 points 2 months ago (1 children)

Okay a lot going on here and not really a lot of information

First thing I would check is does your motherboard have error lights? Even my computer thats 20 years old has lights that flash in patterns as booting. You use this to find out which part of the booting sequence failed, power, ram, video card, CPU etc. Find out which motherboard you have and find the owners manual. If you have SLI available it's an expensive motherboard and most likely has this feature.

Second, double check everything is plugged into the motherboard, ram all cables etc. Something may have shaken loose?

Might be worth physically inspecting the video card. That you could boot up once makes me think this failed. Maybe a capacitor on the video cap exploded or got knocked off.

Lastly try and take the 1080 out of your girlfriends computer and see if you can boot with that. This would help narrow down issues?

One more thing check if you have an igpu. Something may have failed and the motherboard switched to on board graphics. They'll be extra vga/dvi/HDMI ports on the back. Your lack of video could just be from having your display plugged into the wrong port. So try to hook up into any video out put there.

Also perplexity, chat gpt and Gemini can be helpful in trouble shooting.

Godspeed

[–] 5oap10116 1 points 2 months ago

Posting this on all threads:

Fixed: this was my first ever build and after reseating my gpu, I saw some less than intelligent wiring (6+2 pin coming out of my card, daisy chained to a 6 pin that then went into the VGA port on my power supply). I cringed and pulled those wires and replaced it with a PCIE cable from my wife's new build (the reason I removed my 2nd 1080 in the first place). That cable only went into a CPU slot on the power supply but didn't think much of it. Turns out using cables that are not associated with your specific PSU is a nono. Everything works fine and I am dumb for several reasons but at least I learned with (seemingly) no catastrophic consequences.

Thank yall for your help and consideration and sorry I wasted your time.