I've just recently reboot my server to find out an memory issue. The system just hang up at POST screen with code B2 just before booting the os, and I cannot open BIOS setup either. I've did some search and according to the manual the B2 state is 'Console Output/Input devices/Console initialization and Load Option ROM (VGA, RAID, parallel ports, serial ports……)'
refer: http://www.tomshardware.com/forum/321881-30-system-boot-error
Then I unplugged both PCI-E and USB device one by one and reboot to test. After I unplugged the last device this problem still remains.
The board is new and I did not change anything before this issue occurs, so I really have no idea about it.
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