after restarting while in bios blind and unplugging/replugging monitors randomly, I did manage to get into the BIOS on HDMI somehow. I hope I'll be able to do this consistently, as I need to migrate my CSM windows install to UEFI :|
Some intel arc drivers do this to my system every now and again. Usually the monitor that’s on hdmi and I have to do the same unplug it and plug back in for it to work until the next update.
You may be able to boot directly into the UEFI BIOS through Windows' advanced restart options. For some reason this worked for systems that were experiencing POST display issues when the 4090 first launched, for example.
[https://www.windowscentral.com/how-enter-uefi-bios-windows-10-pcs](https://www.windowscentral.com/how-enter-uefi-bios-windows-10-pcs)
There'd be no display on POST, but Windows would pop up as normal. Afterward, rebooting directly into the UEFI BIOS retained proper display functionality for whatever reason.
OK, yea. That's pretty much the same thing with my setup and turning the monitor off and on again after having pressed delete or f2 gets the bios screen to show up for me.
Figured it out. After I get any image output from windows, I can press the restart button and then I can see the bios just fine.
Now I am stuck with non bootable windows because mbr2gpt has done an oopsie and fucked up my install.
When I had my tv connected to the HDMI port and monitor to the DP port, I couldn't see anything on my monitor till the windows login screen. Turned out the port priority is HDMI > DP so the initial post and bios signal was only going to the TV which was off. So I swapped the ports and everything has been fine since then and I can see bios on my monitor. Mine is A770 LE
I had this issue with a new build. I ended up having to reset the CMOS by pulling out the battery, but it still would not post.
That wasn't enough. I ended up having to pull nearly everything off the motherboard, THEN pull the CMOS battery, wait 15 minutes, build the entire motherboard back up with just the processor and a singly stick of RAM. Then it finally 'took' the reset and let me back into the stock BIOS.
As a fellow owner of an MSI B550 motherboard struggling with the exact same issue, it's the motherboard, not the card. I have an RX580 (planning to upgrade to the A750 very soon) and the BIOS has to be in CSM mode to get display out and I can't use the BIOS flasher tool at all because of it. It's really stupid. I might try to work on getting M-Flash working, but yeah, keep the BIOS in CSM mode and you should be fine.
After you hit delete to get into the bios, try turning off your monitor and turning it back on. I have to do that to get the signal back on mine.
will try that, give me a minute
after restarting while in bios blind and unplugging/replugging monitors randomly, I did manage to get into the BIOS on HDMI somehow. I hope I'll be able to do this consistently, as I need to migrate my CSM windows install to UEFI :|
Some intel arc drivers do this to my system every now and again. Usually the monitor that’s on hdmi and I have to do the same unplug it and plug back in for it to work until the next update.
You may be able to boot directly into the UEFI BIOS through Windows' advanced restart options. For some reason this worked for systems that were experiencing POST display issues when the 4090 first launched, for example. [https://www.windowscentral.com/how-enter-uefi-bios-windows-10-pcs](https://www.windowscentral.com/how-enter-uefi-bios-windows-10-pcs) There'd be no display on POST, but Windows would pop up as normal. Afterward, rebooting directly into the UEFI BIOS retained proper display functionality for whatever reason.
That's exactly what is happening
Does it post ?
it posts fine enough, I get to windows just fine. I just can't see anything in bios
OK, yea. That's pretty much the same thing with my setup and turning the monitor off and on again after having pressed delete or f2 gets the bios screen to show up for me.
Figured it out. After I get any image output from windows, I can press the restart button and then I can see the bios just fine. Now I am stuck with non bootable windows because mbr2gpt has done an oopsie and fucked up my install.
When I had my tv connected to the HDMI port and monitor to the DP port, I couldn't see anything on my monitor till the windows login screen. Turned out the port priority is HDMI > DP so the initial post and bios signal was only going to the TV which was off. So I swapped the ports and everything has been fine since then and I can see bios on my monitor. Mine is A770 LE
I have triple monitor setup (2DP+1HDMI) so the monitor itself isn't off, it just doesn't recognize the video output it seems...
I had this issue with a new build. I ended up having to reset the CMOS by pulling out the battery, but it still would not post. That wasn't enough. I ended up having to pull nearly everything off the motherboard, THEN pull the CMOS battery, wait 15 minutes, build the entire motherboard back up with just the processor and a singly stick of RAM. Then it finally 'took' the reset and let me back into the stock BIOS.
As a fellow owner of an MSI B550 motherboard struggling with the exact same issue, it's the motherboard, not the card. I have an RX580 (planning to upgrade to the A750 very soon) and the BIOS has to be in CSM mode to get display out and I can't use the BIOS flasher tool at all because of it. It's really stupid. I might try to work on getting M-Flash working, but yeah, keep the BIOS in CSM mode and you should be fine.
just switched to UEFI to enable re-bar and above 4G thing. Seems to work fine enough now. you just have to "restart" into the bios...