HI all, I need so advice. I am a complete noob to computers! I have a fairly basic Dell Dimension 3000. It has been reliable for the couple of years I have had it, but yesterday when powering down in the normal way there was a loud bang from within the unit! The unit will now not power up....I have checked the fuse in the plug and it is fine! Dont know what happened or the effect it will have on my PC - is it bad news? Cheers for any advice you may be able to offer. Frags.