Question What could be the problem with my PC ?

[Cheress]

So yeah, I had a bad motherboard, I'm guessing that it was damaged by a PSU that went bad. The reason I replaced it was because it wasn't showing up any display and the VGA led was on so I thought the problem was the motherboard. I replaced it an MSI b550m pro-vdh wifi and it was working just fine for a couple of months, until I was away from home for 1 month, and when I came back, I turned my PC on it worked fine for some minutes, it restarted due to updates, but then I got this problem of VGA led and no display again.

Then I thought the problem was the GPU, I had an RX 560, so I put and old Radeon HD 7790 that I had and it worked fine for basic stuff, but then I tried to put an GTX 1650 a friend lend to me and it happened again, I don't really know what the problem is at this point, the HD 7790 works fine but the other ones have this problem and that's really weird, how can I solve this?
My friend tested the GTX 1650 and it was working fine, so I don't know why is it happening on my PC.

PC Specs
Mobo: MSI B550M PRO-VDH WIFI
PSU: Gigabyte P650B
CPU: AMD Ryzen 5 5600
RAM: 16GB Corsair Vengeance RGB PRO DDR4 3200 MHz (single-channel)
Green 1TB + HDD Seagate Barracuda 1TB
Gigabyte AMD RX 560, Radeon HD 7790 (only one that works apparently), GTX 1650

 

[Aeacus]

had an RX 560, so I put and old Radeon HD 7790 that I had and it worked fine for basic stuff, but then I tried to put an GTX 1650 a friend lend to me and it happened again

When replacing GPUs, did you:
1. Booted into Safe Mode
2. Uninstalled current GPU drivers.
3. Used DDU to get rid of lingering GPU drivers.
4. Downloaded and installed the latest GPU drivers from GPU website (either Radeon or Nvidia).
?

If not, then different GPUs won't work when you have GPU drivers installed for another GPU.

Now, GPU can work without GPU drivers what-so-ever, by using Win built-in display drivers. But those are good enough for basic work and web browsing.

So yeah, I had a bad motherboard, I'm guessing that it was damaged by a PSU that went bad.

PSU make and model was? Or is it the same Gigabyte P650B you're currently using?

Gigabyte P650B

Low quality PSU. I'd replace it.

Could be that your Gigabyte PSU damaged other components as well, hence why you are seeing issues again.

For 2nd opinion about your PSU, look it up from PSU Tier list,
link: https://docs.google.com/spreadsheet...JWkc/edit?pli=1&gid=1973454078#gid=1973454078

You'll find it to be Tier C.
While for new PSU, i suggest anything from Tier A, like: Seasonic Focus/Vertex/PRIME, Corsair RMx/RMi/HXi/AXi, Super Flower Leadex Gold/Platinum/Titanium.
550W unit does fine. 650W unit doesn't hurt either.

(My 3x PCs are also powered by Seasonic. I have PRIME 650 Titanium (Tier A+), PRIME Ultra 650 Titanium (Tier A+) and Focus PX-550 (Tier A) units. Full specs with pics in my sig.)