The power supply unit (PSU) has probably blown “or at least a fuse in it”.
Don’t try and fix it yourself, these tend to have very few serviceable parts inside and can still give you nice electric shock even when their not plugged in “if you don’t know what your doing of course”.
Just buy a new (PSU) mail order, its probably going to be something like 400w ATX psu 16GBP approx.
Fit it yourself by just looking where and how the old one is plugged in.
Good luck
Chris
Chris
November 2008