Question No display on monitor when using GPU

[The Lost Soul]

Hi!

My Specs:

CPU: AMD Ryzen 5 5600G
RAM: Corsair Vengeance DDR4 32 GB 3200 MHz
Motherboard: Gigabyte GA-B550M DS3H Rev 1.5
GPU: ASUS Phoenix RTX 3050
PSU: Corsair CX650M 80+ Bronze

Everything was running okay until one day I tried to install my old HDD. There was "No Signal" on my monitor but the Windows was booting up. So I removed the HDD and the problem didn't go away. I thought may be clearing CMOS would fix it but it didn't.

So I uninstalled my GPU and it was working perfectly through IGPU. So I thought it might be the dust and disassembled everything and dusted thoroughly especially the PCIE slot. Then I removed and inserted the CMOS battery and installed back the GPU. It worked for a few days and as I don't have any UPS the power cuts are also a problem. After one, it did the same issue. Then I researched and found out that Windows Boot Manager might be corrupted as well as the BIOS since it somewhat communicates with it. So after a few hours I saw it automatically corrected itself and worked for a few days before doing that again.

So I reinstalled windows and reflashed BIOS and I did this countless times along with battery reinstallation. I thought one of them - GPU or Mobo might be the problem. So I tried the GPU with my old mobo and there was no issue. So I thought my current mobo has problems but there is no issue with IGPU.

Then I found out that it gives a beep error message with CSM support disabled with GPU as if there is nothing installed in PCIE slot even when there is a GPU installed.

And currently I am not able to get the GPU to work. This is weird but when I switch on my PC after a few hours the GPU shows the mobo logo for a few seconds and then the monitor turns off. I tried flashing the BIOS with previous version (the version the release notes of which says "Addresses potential UEFI Vulnerabilities (LOGO fail)" but it is still the same.

I am unable to understand what is wrong . I have tried everything and I've run out of ideas.

Any help is greatly appreciated.

 

[Lutfij]

PSU: Corsair CX650M 80+ Bronze
How old is the unit?

You might want to source(borrow, not buy) a reliably built PSU with at least 550W of power at the entire system's disposal.

Motherboard: Gigabyte GA-B550M DS3H Rev 1.5
What BIOS version are you on for your motherboard at this moment of time?

 

[The Lost Soul]

PSU: Corsair CX650M 80+ Bronze
How old is the unit?

You might want to source(borrow, not buy) a reliably built PSU with at least 550W of power at the entire system's disposal.

Motherboard: Gigabyte GA-B550M DS3H Rev 1.5
What BIOS version are you on for your motherboard at this moment of time?

How old is the unit?
2 years 3 months

The PSU is 650 W.

What BIOS version are you on for your motherboard at this moment of time?
Currently it's F4. Tried F5b previously.