These are my specs:
MBO: Asus B550-E Strix
CPU: Ryzen 5800X3D
RAM: G.Skill Trident Z 4x8GB @ 3200CL14
SSD: WD SN850 1TB (boot drive - sits in m.2_1 slot) + WD SN7100 4TB (in m.2_2 slot)
PSU: NZXT C1200 Gold ATX 3.1
I've upgraded from Gigabyte 3080Ti Gaming OC to Asus Prime 5070Ti OC.
I expected this to be a simple GPU swap.. oh boy was I wrong..
After swapping to Asus GPU I get "No display input" (black screen, with no BIOS or windows shown) on my monitor and Asus MBO shows a white light (no VGA signal).
The only thing that helps, and after which I do get a signal on my monitor is erasing the RTC RAM on my motherboard. After doing that BIOS shows up with following message:
"The VGA card is not supported by UEFI driver. CSM settings have been changed for better compatibility."
I can then enter BIOS with F1 and after saving changes and restarting, windows shows up and I can use my PC without issues (even overclocking and undervolting the GPU and playing games with DLSS/MFG).
But after a restart or pc power off/on, I again get a black screen with MBO showing white light.
I had no such issues on 3080Ti.
Things I've tried:
- BIOS update (I am on the latest BETA version of B550-E bios).
- Clear CMOS
- Flash NVIDIA GPU Firmware update that supposedly fixes the black screen issues
- Switch from provided ASUS PSU adapter to using the 12vhpwr cable that came with my PSU)
- Switch PCIe slot to Gen3 & Gen 4
- Disable Gsync (VRR) on my monitor
- Disable DSC on my monitor
- Use HDMI and DP cables
- Play around with BIOS CSM settings (reseting and generating new keys)
The only thing that had any lasting effect was reinstalling Windows 11 > this gave me the best results, since things were working as expected even after multiple restarts. But when I went to power on the PC the next morning, it again greeted me with no VGA signal..
I am really desperate right about now and don't know which troubleshooting steps to take further. All my components work great when everything is working and I had no such issues with 3080Ti (that was running at Gen4 x16 speeds).
What else can I do?
