Is the graphics card still sending the display signal after you rebuilt it?
Is the graphics card still sending the display signal after you rebuilt it?
I often consider myself tech-savvy, yet this was the most disheartening experience I’ve had. Over the last ten hours, I spent configuring my PC build.
Details:
- Motherboard: am5 asus b650e-f WiFi
- CPU: 7950x3d
- Cooler: Lian li ga ii trinity
- PSU: Corsair rm1200x
- RAM: skill ddr5 6000Mhz
- GPU: 7900xtx nitro+ vapor
- Monitor: 4k LG 27gp95r-b via DisplayPort
My initial challenge was that the CPU fan header was missing. I resolved it by disregarding the BIOS warning, as I have an AIO and it indicates around 40-50°C.
The bigger problem turned out to be with the monitor connection. When I linked my monitor to the 7900xtx using DisplayPort, it functioned briefly—enough to boot Windows but then dropped, losing the signal. In Device Manager it appeared as a hidden device. The PC operated normally when connected through integrated graphics, but not with the 7900xtx.
- Fans are spinning and power is clearly being delivered to the GPU
- I’ve swapped out several monitors
- Re-seated RAM, checked one stick at a time; no lights came up on the motherboard
- Disabling CSM, enabling CSM
- Changed PCIe link mode for pcie_x16_1 from auto to gen 3 and then gen 4
- Experimented with various RAM clock speeds
- Uninstalled all display adapters
- Used older GPU drivers
- Tested with outdated graphics drivers
- Reseated the GPU multiple times
- Adjusted PCIe cables, ensuring every connection was secure; the USB Gen 3.1 header didn’t fit properly but worked when pushed firmly
- Updated BIOS/restarted in safe mode without internet
- Verified GPU PCIe cables are straight connectors
Please assist me—this was frustrating, and I don’t want to have to travel back hours to MicroCenter again.
capture some photos of your setup, perhaps we’ll notice something unusual (upload to imgur.com or similar).
apply all available Windows updates and the newest drivers.
test with a different DP cable and an HDMI connection.
run Ubuntu live to check if the issue lies with a Windows driver.
I’ve attempted to reset the CMOS, used various cables (HDMI and 2 DisplayPort), and all drivers are installed. It might be a faulty part. My PC recognizes my second M.2 in slot 2, but Windows doesn’t, possibly needing a drive management format. The 6000MHz RAM works fine on the GPU, but I’ve tried adjusting it to 3200MHz without success.
The faulty GPU even though it was brand new. My conclusion came after testing it on another motherboard, which also had the same problem. I repeated the issue on another board and even used a second PCIe X16, which surprised me because I know sapphire is a reputable maker but apparently bad components can’t be trusted. I didn’t want to go back to NVIDIA, but I think I’ll proceed anyway to stay safer. This is because the last four AMD cards I tried to use have been difficult to get working properly. Unlucky.