I thought I would keep trying to get this old system going before I look at spending£400 or £500 on new parts. To re-cap. I replaced my PSU, two case fans, a CPU heatsink/fan and Northbridge fan (with a heatsink). Now all I get on startup is green light on the mobo, HDD spins up along with the case fans and nothing at all displayed. What if I take off the CPU fan/heatsink and run (quickly) without it to see if that is causing a problem. It was a hell of a job to get on (but then I've never done this before) so I was wondering if it was this that was causing the problem in some way shape or form ....... what are the suggestions ....... ?