Do you see aything on the monitor at all, or is the shutdown immediate? Possibly a registry issue- try to get to the bios via the appropriate function key during boot-up and start in safe mode.

__________________
Dave

'05 325xi
'10 E70 35d
'85 911 Carrera
'66 911 Work in progress
'91 Chevy C1500
'95 Jeep Cherokee
‘18 Jeep JLU