Question Dud GPU or......me?

[AbeDub]

I recently decided to upgrade from an RX 480 to an RX 6650xt. I used DDU to action a clean uninstall in safe mode, yet on rebooting the PC I could not get a signal through the RX 480 (HDMI to AV to TV) and would just get a black screen. Switching HDMI across to the motherboard, it booted. I went into BIOS and it showed the PCIE slot as empty.

Assuming a driver issue I swapped the 480 for the new GPU, this time it booted but the screen was warped as though it hadn't been 'tuned' in (imagine the old CRT's tuners). I checked and rechecked all plugs and sockets etc just in case I had knocked something but all tight.

I can't fathom why it would just black screen on me after uninstalling drivers. MB, RAM, CPU etc is all looking good. So any suggestions would be helpful.

Specs:-
i5-12600k
Z690 UD DDR4 MB
32GB Patriot RAM
650 Corsair PSU


EDIT - The 6650XT works and installs drivers fine. The 480 works on a friends PC but when I plug it back into mine, I still get a black screen.

 

[AbeDub]

Anyone?

Today I've tried

CMOS reset
DDU uninstall again, just in case.
Changed from HDMI to DisplayPort and nada.
Updated BIOS to latest
Fresh W 10 install
CPU test - all ok
RAM test - all ok.

I've spent 9 hours today just tinkering and got nowhere apart from it's now later in the day and the dog is wanting walking

 

[ohio_buckeye]

What are you trying to do? It sounds like you’re trying to run both at once? I’m not sure why after you put the 6650 in that you’d reinstall the 480.

Go with only the 6650. It should have plenty of outputs.

 

[AbeDub]

What are you trying to do? It sounds like you’re trying to run both at once? I’m not sure why after you put the 6650 in that you’d reinstall the 480.

Go with only the 6650. It should have plenty of outputs.

What am I trying to do? I'm trying to figure out why the 480 has stopped working. I'm not trying to run two GPU's at once, either. What sort of idiocy would warrant that?

On a side note, the 6650 is going back as it crapped out on me, hence going back to the 480 that black screens on me which it did after uninstalling the drivers for it before installing the 66. Pretty sure I mentioned that. Or did I?

 

[ohio_buckeye]

The first part of your first post sounded like you did ddu then put the 480 in again and that it was what black screened. But the 6650 being off makes sense.

It looks like you did this already but keep the 480 in then run ddu in safe mode and try installing the later driver for that card.

What model Corsair psu do you have and how old is it?

 

[ohio_buckeye]

The first part of your first post sounded like you did ddu then put the 480 in again and that it was what black screened. But the 6650 being off makes sense.

It looks like you did this already but keep the 480 in then run ddu in safe mode and try installing the later driver for that card.

What model Corsair psu do you have and how old is it?

 

[ohio_buckeye]

The first part of your first post sounded like you did ddu then put the 480 in again and that it was what black screened. But the 6650 being off makes sense.

It looks like you did this already but keep the 480 in then run ddu in safe mode and try installing the later driver for that card.

What model Corsair psu do you have and what’s the age?

As far as running 2 gpus at once, you see people trying to do lots of things so always a good idea to ask.

 

[AbeDub]

The first part of your first post sounded like you did ddu then put the 480 in again and that it was what black screened. But the 6650 being off makes sense.

It looks like you did this already but keep the 480 in then run ddu in safe mode and try installing the later driver for that card.

What model Corsair psu do you have and how old is it?

GPU was seated firmly in the slot when I DDU'd it and rebooted. It didn't leave it's warm surroundings. Ignore the 6650

It's not seen by either the BIOS or in device manager so I can't safe mode DDU and reinstall drivers.

The PSU is a TX650w bronze model and had it about 3 yrs.

Appreciate you having to ask but for me it would be rather daft trying to run two cards at the same time.