Something has gone wrong on my friends Mac...

[jesta]

Hey guys,
a few days ago my mate was installing the updates for his macbook and I believe his macbook must have crashed or something and now everytime he turns his macbook on it always ask him to restart his macbook.It has some form of coding written top left of the screen with something about ACPI driver missing.

Does anyone know how to fix ths?

Thanks.

 

[jesta]

Did you Archive and Reinstall just by booting from the DVD? If so thats probably a better solution (easier).

How does the Archive reinstall work?Do you lose all your files?(Sorry I'm a n00b on Macs)