prolly not but can normally work out the bit that is broken ... u can go buy it and replace it ????
this will only work if you do NOT have a warranty on the system. If you do then we need to forget about it.
What it sounds like from the way Gnarl explained it and the way you imitated it over TS to her the other day it is either the PSU or the processor fan's .... both of which should cost no more than £20 to fix and take about 10 mins for u to install.
have you thought about going to an internet cafe? there should be loads in town with wow installed and ready to play?
anyways let me know