When I upgraded the motherboard etc, I also upgraded the PSU from a 350W to 450W, however if this is likely to be a problem then I'll look to replace it.
As I've managed to start windows successfully can I rule out the CPU or is this still possibly the cause? Also as the case is pretty cramped can you suggest a decent alternative to
my current one
Is there anyway of finding out exactle what has caused the problem or is it a case of putting everything back until it no longer works?
I pleased I can boot up again, but still confused as to what the problem is/was.
Thanks again guys.