Ok, this is my problem. Windows XP (Media Centre version) hangs during
startup. Displays the logo and scrolling blue bars but that is it. I am able
to start in safe mode with no problems (in safe mode, with network and
command prompt).

This is what I have done so for:

Scan Disk – no reported problems
Defrag – no problems
Clean boot – msconfig, un-ticked all in selective start-up, but fails to
load in normal mode (tried with and without “windows essentials� running in
the services tab).
Diagnostic start-up, again fails during normal start-up.

Anything else I can try??

Would repair windows installation work?

Many thanks