We have a SYS-1029P-WTR (X11DPH-T) after BIOS update 3.6 to 4.7, BMC 1.74.02 to 1.74.19, our Windows 2019 (legacy boot) on VROC RAID1 is no longer able to boot. The KVM just goes dark.
The issue could be caused by newer BMC firmware is not compatible with old ASpeed 2500. Please contact support@supermicro.com and asked for older BMC firmware 1.74.02 to temporarily downgrade the firmware. After firmware downgrade, upgrade the ASpeed windows driver, and then update the BMC firmware to 1.74.19 again.