H4d starting up error, starting up takes long time, then displayed error

[Waldemar777]

H4d starting up error, starting up takes long time, then displayed error please reboot, anybody knows this problem?how to fix this?
Thanks in advance:)

[jerome_m]

Try the classics: take the battery out for a few minutes, reformat the CF card, dismount and remount lens and viewfinder, try another battery...