I had to upgrade the bios to version 5456 to resolve some SLI issue.
When I enable UEFI mode, my usb keyboard (wired & wireless) was not functional at all.
I noticed firmware 5200 suppose to resolve this kind of issue, but why 5456 has the same problem again?
In the end, I had to use recovery mode to reset my bios setting to get keyboard to work again.
Has anyone else experiencing the same problem as I do ?
Thank you.