I can not boot up the MediaStation X-76..

It appears that it does not find the boot order..I also tried to reinstall the OS..same thing..It just lights the 4 leds (main mix,Cue,Phones and Mix2)..

I also tried to get into Bios via F1, F8 on a keypad..No luck..

The MS was working fine..I shut down the keyboard as usual (on stage), and the next night tried to boot up and ..problem..I did not move the keyboard, so it was not bumped...
Any ideas? Zmago, Dom..anyone..

I have tried two hard drives one with the last OS and another with the prior OS (my preference)..