I up this post as I am on the same situation...
The only way at the moment is to downgrade the bios version to one of the oldest ... tried once but I got my WIN11 system corrupted right after the downgrade.
Are ya trying to install Monterey ? Cause most of the b550 motherboards break the Monterey install. In the waiting to get an Opencore update or a new BIOS version fixing the B550 issues with Monterey, Big Sur works perfectly !
In case you're trying to install BigSur, restart from scratch and...
WAIT A MIN.... I don't know if the following BIOS settings must be disabled by any way possible and could cause the mentioned issues related to MSI and b550 boards while installing Montereyt but they aren't in my BIOS for sure.
Serial/COM Port
Parallel Port
Is there a way to disable them thru...
I was about to try with the 7C94v12 BIOS version for my motherboard @Shaneee.
But, what if I update to the latest BIOS version after I potentially succeed at installing Monterey... Ya guys think this could work ?
Yeah @Edhawk , I've been spending days looking for fixes and trying things. Would...
That's so weird, I still have issues to install Monterey, both by updating from bigsur or using an USB Installer.
My motherboard is a MSI B550M Mortar Wifi running with a 3500X Ryzen CPU and a Rx6800 GPU from Gigabyte.
But I haven't use the clearvram and resetsystem tools yet... I'm gonna give...
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