Hey. Thanks for readiness. No. I work on a IT company and we have about >20 pcs of M57p with this problem. No USB problem. CPU changed, RAM changed, PSU changed, unsolder and solder back the BIOS chip from motherboard, i even make an silent BIOS update from floppy disk, NO LUCK. The only thing i can do (just sometimes) is to enter in a sub menu with CTRL+S combination, but i cant do nothing in there, just 4 option. I 99% sure that is BIOS related. I'm out of ideas.
It seems that L3OUGH have the solution for this problem
Thanks for reply mac_shinobi
