I recently upgraded my setup with an i7 14700k and a 5080 GPU, but I decided to switch back to my previous 4080 since the upgrade didn't seem worth it. Now, after reinstalling the 4080, my monitor won't display anything over HDMI or DisplayPort. To rule out the GPU as the issue, I also reinstalled the 5080, but I'm still facing the same problem. My PC seems to boot fine—the lights and fans are working, and all the external accessories turn on, but I can't get any visual output. Occasionally, a white light on the motherboard pops up while troubleshooting, but it doesn't seem to affect whether the display works. As of now, that light is off.
Here's what I've already tried:
- Testing with 2 different monitors
- Using both HDMI and DisplayPort
- Removing and reseating both GPUs
- Removing and reinstalling the RAM
- Plugging the DisplayPort directly into the motherboard to see if it would produce a display at all
- Unplugging and reconnecting both monitors
- Trying different ports on both the GPU and monitors
- Rearranging VGA cables
I'm starting to lose my sanity over here!
3 Answers
Could you share your full specs, including the power supply? Also, it might be worth clearing the CMOS. Did you uninstall the RTX 4080 drivers before switching back to the 5080?
I see you have a TUF Z690 motherboard with an i7 14700k, 4080/5080 GPUs, and an 850 Watt PSU with 32 GB DDR4 RAM. Normally, just swapping cards shouldn't cause issues, but there's something up here. Have you checked if the power connections are secure on the GPUs?
Have you tried removing the 4080 completely? See if the system boots to the integrated GPU connected to the motherboard's display output. That might help narrow down the issue.
No display from that either, and the white light didn't come on this time.
Drivers are not needed for getting a BIOS display. They only load after the OS starts, so I don't think that's the problem.