GPU repair in Dublin/Ireland

Trevor_Cory · 16-06-2026 03:30PM #1

Hi all,

I've got an RX6800XT that doesn't post, been in a box for a while now and I'm using an older and still working card. It doesn't post but power is delivered, fans spin and the light comes on.

Does anyone know of someone who has knowledge in repairing graphics cards? I jumped through the hoops with AMD and consumer watchdogs with no luck as I've had the card over 2 years (I argued that a premium product should be expected to last more than 3 years).

Spear · 16-06-2026 08:46PM

Have you tried with both cards in the same PC? If you run off the other good GPU, is the 6800XT detected at all as a PCIe device still? Can GPU-z extract any info from it? Does it have one of those BIOS select switches that some AMD cards tend to?

Trevor_Cory · 16-06-2026 11:20PM

It's in an ITX build so can only have one plugged in. Ssh'd to the PC with the card in this state, lspci and amd tools haven't detected the card. Light and fans come on.

I'm suspecting a possible bios issue but would like to know if there's someone I can take it to. I'll check the card with a multimeter but beyond flashing the bios and I would like to have someone who knows what they're doing work on it.

Ozymandius2011 · 16-06-2026 11:29PM

Have you tried updating the bios? While not the first port of call, it can sometimes help.

Also have you checked that your PCs power supply is enough to handle this graphics card?

My PC, which I built, has a Flash Bios option. This involves downloading the latest bios update for your mother board and putting it onto a flash drive. Then you restart the pc and go into bios mode (I think it's the delete button on and msi motherboards), select the Flash Bios option, then going to the correct file path on the memory stick and selecting. It can help with things like hardware incompatibilities with very recent hardware.

Other possible problems include the gpu not being properly seated.

I got a platform to use as a stand to hold up my GPU last year.

Trevor_Cory · 16-06-2026 11:39PM

Mobo is up to date with the latest bios, this happened out of the blue and there's no signs of stress on the pcie connection on the board. Definitely seated properly, reseat several times and other cards work fine.

Ozymandius2011 · 16-06-2026 11:44PM

https://www.boards.ie/discussion/comment/124556622#Comment_124556622

AMD recommends a minimum 750W power supply for the Radeon RX 6800 XT. While a quality 650W unit can suffice for lower-power CPUs, a 750W to 850W power supply (80+ Gold rated) is ideal to handle the GPU’s 300W power draw and sudden transient power spikes safely.

Also have you checked drivers from a previous gpu arent the issue?

Trevor_Cory · 17-06-2026 12:23AM

Yeah power supply is fine, especially considering a Radeon vii will happily run at full tilt on it. As for drivers, fresh install of Bazzite still doesn't detect the card, undetected on Windows or Linux.

Ozymandius2011 · 17-06-2026 01:01AM

Maybe a problem with the hdmi cable?

Some GPUs have their own power sockets. Mine doesnt but I've had ones that did in the past. So important they are connected too. Sometimes people miss them.

Trevor_Cory · 17-06-2026 07:36AM

Yep tested HDMI, DP and USB outputs. The card isn't detected so no OS will know to output there anyway.

Spear · 17-06-2026 07:57AM

https://www.boards.ie/discussion/comment/124556887#Comment_124556887

Yeah, if lspci isn't showing it, then it isn't even appearing on the bus, so attempting to reflash the GPU BIOS isn't likely to get anywhere. It does sound quite toasted at this point.

Trevor_Cory · 17-06-2026 08:04AM

Yeah, I'll open it up when I get time and test the lines etc but would need someone who's better at resoldering components to handle that part.

GPU repair in Dublin/Ireland

Comments