Proliant dl120 g6 can't start after update BMC

Hi,

I have problem with my server HP Proliant DL120 G6. First I update BIOS to latest version (O26 (07/01/2013) and then I update BMC to latest version (4.26).  After these updates during start server show error mesage "Fan fail/missing. System prepare to shutdown" and then go to shutdown. When I update back BMC version situation is same.

Can you help me?

Thanks Wittak