lol ive been lucky all my problems have sorted themselves out
i did have 1 where it wasnt my fault but i didnt know
i plugged a mouse in with the ps2 port(its called that rite?? (the old school mouse plugs anyways) while it was on and i had also heard this crackling noise a few times b4 and didnt take much notice but it just all of a sudden made a heap of noise and turned off and wouldnt turn on so i took it down to the computer shop and they chaged me $30AU to tell me that it works and that it must of been cos i plugged it in while it was on
i said it wouldnt do that blah blah and they insisted it was so i took it home and ended up finsing out a few days later my power cord was shorting out in the back of the computer cos it wouldnt sit rite but they didnt believe me lol