Question White and green light while booting.

[tomfod96]

Hello.
Im currently having some issues with my pc.
Theres no signal.
Im getting the green "BOOT" light when the DP/HDMI is connected via the motherboard.
Im also getting the white "VGA" light when the DP/HDMI is connected to the GPU.

Ive tried:
1. A different GPU.
2. A different riser cable.
3. A different PCIe slot.
4. A different monitor.
5. Removing both the battery as well as resetting the CMOS.
6. Removing all the cables as well as the RAM sticks.
7. Trying different RAM sticks
8. Updating the BIOS.

The issues have been occurring after flushing and changing the coolant.
Im currently using the DP ultra.
No liquid spill on the motherboard as far as I can tell.
Ive taken everything apart except from the CPU.

At some point, I was able to boot the PC while getting signal from the monitor when connected to the DP/HDMI via the motherboard.
That is when I was able to update the bios.
After doing the update, I noticed that the GPU wasnt showing up inside the Device Manager.
I manages to remove the GPU driver after selecting the "Show Hidden Devices" inside the Device Manager.
Restared the PC and decided to update to the latest GPU driver.
After restarting the PC, the issues started to reoccur.
No signal from the monitor.
The same thing aslo happened before I decided to change the GPU.


The specs:
Intel Core i7-12700K.
ASUS ROG STRIX Z690-A GAMING WIFI.
ASUS GeForce RTX 3080 ROG STRIX OC.
Team Group T-Force Xtreem ARGB White 4x8GB 3600 MHz CL18.
WD Black SN850 2TB M.2 SSD.
Corsair SF750 Platinum.