It seems like SuperMicro X9 boards with E3v1/v2 CPUs (X9SCL-F, X9SCL+-F, X9SCI-LN4F, X9SCA-F, X9SCM-F, X9SCM-IIF, etc) will not allow you to enter BIOS if the system date is past December 31, 2020. When attempting to enter BIOS, it comes up with a blue screen, and in the bottom right the error code "AB", which apparently means "Setup Input Wait" per SuperMicro documentation. If you clear CMOS, you can get into BIOS. We've tried with the latest BIOS (v2.3) and also older BIOSes with the same results.
I wonder if SuperMicro will release an update to fix the problem.
I wonder if SuperMicro will release an update to fix the problem.