Fix my brother's PC!

[GT40FIED]

Originally posted by blind34_1
from there you should be able to undo whatever it was he did last before it stopped booting (you'll need to find that out, because he surely did something)

Therein lies the problem. One of his tenants (he sublets rooms in the house while renting it from my mom) has a friend who supposedly "knows computers" and he came to look at some problems with it. Next thing you know the PC is fucked and his tenant won't give him the number of the guy who last touched it. That leaves me with no idea of what's going on or what this fucktard did. All he says (through her) is that he "found it that way" which is bullshit because I performed maintainance on the PC just a week before he fucked it up and I know my brother isn't computer literate enough to fuck this up on his own (he calls me with every little PC question he has).