Hi guys!

I have this RX580 from Sapphire that has a bios switch to select between "silence" and "performance" mode. I can use it without issues in silence mode, but when I switch to performance mode I have no video signal for all the boot process, until it comes into Windows 10. It seems to be a similar issue like here: Asus RX 580 UEFI/ CSM Bug

Here's the bios file that doesn't show video during the boot: https://www.dropbox.com/s/r6rjstov26572b...e_bios.rar?dl=0

Is there any way to fix it? I'm using the GPU on a AsRock Z370 Extreme4 with the latest bios release.

Thanks in advance for the reply!

That bios looks to have been modded to have the same timings for 1500-2000. Card was previously used for mining.

Find a suitable bios https://www.techpowerup.com/vgabios/

perhaps https://www.techpowerup.com/vgabios/1917...580-4096-170323

Zitat von ziddey im Beitrag #2

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That bios looks to have been modded to have the same timings for 1500-2000. Card was previously used for mining.

Find a suitable bios https://www.techpowerup.com/vgabios/

perhaps https://www.techpowerup.com/vgabios/1917...580-4096-170323

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Ok, I've tried to flash the bios on the second link (after taking a look at the difference between mine and the downloaded one) and everything went fine. Now I have signal at boot and so I can enter into bios, too.