Help with sudden non starter please NOW RUNNING!!!

[titch]

Had a mate come over quickly with PP  he didn't have a lot of time and he read the fault codes on the ecu:

There was PO100 something to do with the maf

and the clutch switch. can't remember the code.


Then when you scroll down and get to  built in systems interface ( i guess thats the BSI unit ) it said:
 
Permanent fault no reply. engine management control unit.

Counter  40  


Any ideas ??

Cheers Titch

He has left me his lap top and the lead, but making a post on here is about my limit when it comes to computers