I recently upgraded from an RTX 3080 to a 5080, but now I'm facing a black screen issue with the new GPU. The 3080 works perfectly, so I know it's not a cable or display problem—I've double-checked everything multiple times. I've also updated my BIOS and tried various settings that should help (like switching between CSM, PCIe Gen 4, and enabling Above 4G Decoding). Strangely, the 5080 did work once after installation, but after messing with the settings again, I can't get it to display anything now. I'm at a loss and thinking about taking my PC to a repair shop since I'm out of ideas. Any suggestions? Here are my specs: Be Quiet! Pure Power 11 FM 850W, Gigabyte Z690 Gaming X DDR4, Intel Core i7-14700K, Scythe Cooler Fuma 2B, 32GB Corsair Vengeance RGB PRO SL DDR4, Samsung 1000GB M.2 SSD, and a 2000GB WD HDD.
4 Answers
I've had the same issue when I upgraded my card. I managed to fix the black screen by reinstalling the BIOS. It could help, so give that a shot if you haven't already!
I recommend reseating the GPU again—sometimes it's just not seated properly. If it still doesn't work, try resetting the motherboard CMOS/Bios. After you get it running (if it does), make sure to check if there's a VBIOS update for your GPU. Good luck!
It sounds like you've done a lot of troubleshooting already. Maybe it's time to bring it to a shop and see if the card is defective. If you're still under warranty, you might be able to get a replacement.
First off, you might want to enable the iGPU in the BIOS and connect your monitor directly to the motherboard. Then, shut down your PC, insert the GPU, and power it on. Once booted, check Device Manager for any error codes related to the GPU; you can also use GPU-Z to see if there's missing data. I had a similar issue with a 5070ti that showed error code 43, so it might be worth investigating whether your card is defective too.
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