Possible faulty pci-e slot?

[stilli1988]

Hi all. this is a doozy so strap yourselves in.
I use a HDMI switcher thing and was playing my ps4 and when i switched back to my pc the screen was black. So i restarted and it booted to the windows logo then to a black screen. so i never saw my desktop. I switched in my backup card and it worked fine. I can't remember what i did after this but something was going wrong because i reset my pc. anyway, when i went to install the graphics drivers my card wasn't being detected. I switched back to the good card and the same thing was happening. i reseated it and eventually got the drivers to install. i've been fine for a few hours but then it went back to a black screen. I restarted it and went straight on here to make a post. I suspect I have a faulty PCI-E x16 slot. Even when i'm typing this these black triangles and squares are popping up. they're quite big not the small ones. Screen flashed black for a second then to.

Specs:
Components
Case: Corsair Obsidian 450D
Motherboard: MSI Z87-G45
Graphics Card: MSI r9-290x gaming (HD5850 as the backup)
CPU: Intel i5-4670k
RAM: 8GB G. Skill Ripjaws 1600MHz
Power Supply: Corsair 750w RM-750 ATX PSU
SSD: Samsung 850 EVO SSD
HDD: Western Digital WD Black
Monitor: AOC 2434pw
Keyboard: Logitech G710+
Mouse: Razor Deathadder Chroma
Mouse Pad: SteelSeries 4HD Pro Gaming Mouse Pad
Speakers: 2.1 Channel Logitech Z443
Headset: Corsair Vengeance 1500v2 Dolby 7.1 Channel
Operating System: Windows 10 (64-bit)

TIA, Steven.

 

[pug_s]

It might be an issue with your power supply not supplying enough power to the video card. If you have a really cheap video card that doesn't need external power, try using that.

 

[Thugginator]

A 290x can run on a 750watt PSU. The issue sounds like signs a failing graphics card would show. Black screens, drivers/hardware not being detected, random artifacts (black squares popping up). it could be that both are failing. But try all other pci-e 16x slots. It could be that the psu is failing and it cant supply a constant flow of power to the graphics card. (only saying this because i once "powered" a gpu with an incompatible psu, and i had the same kind of issues). But i dont know for sure.

 

[stilli1988]

Hi. Sorry for the late reply. Decided to take my pc into the local PC shop. They confirmed my card is indeed dying. Thanks for the help anyway.