OptiPlex 7050 SFF Weird Graphics Errors

[Marcusrealms]

Hi friends,
Almost a year ago I got a Dell Optiplex 7050 SFF and fitted it with a low profile GPU. That's all well and great, but once in a while i run into a very weird snag. When I turn it on and it gets to Windows, there seems to be a random chance that either the 6400 errors out, the iGPU errors out in device manager, or even both and I'm left with no output and have to power cycle. I'm not very proficient when it comes to PSUs, but considering this has a 180W PSU I'm not turning down the possibility that it may have something to do with that. Or maybe I'm wrong and it's some other weird issue, and that's why I'm here. Are there any other possibilities that might have occured? And, should I just put it to sleep mode as a viable alternative until I eventually figure it out? Many thx

Specs:
Windows 10 Pro 22H2
Dell OptiPlex 7050 Small Form Factor
BIOS Version: 1.27.0
i7-7700
RX 6400
4x 32gb ram (dunno brand, task mgr dosen't say)
180W PSU