Yesterday my machine froze and I had to so a power off restart. Since then it will freeze during boot up, not always in the same place. Sometimes at the login screen, sometimes gets as far as loading the desktop, but it freezes every time.
If it gets as far as the desktop I am able to press alt-ctrl-delete and then click Task Manager but at this point the start menu and taskbar disappear.
System restore fails. I have also noticed that nothing seems to be being written to event logs.
If I do a diagnostic startup so that no services are running the system will boot into normal mode.
Works satisfactorily in Safe Mode.
Spec is HP dx2400 PC, Intel Core 2 duo E7400 processor, 3.25GB ram, running XPSP3.
Thsi is very similar to a problem I had last year:- http://www.bleepingcomputer.com/forums/t/516204/windows-xp-programs-will-only-work-in-safe-mode/
Perhaps foolishly, I have run the windows repair software from tweaking.com and it has made no difference.
Any help would be greatly appreciated. I know I need to move on to Windows 7 but this machine runs legacy software which will not work in W7 even in xp mode. I will make it an 'offline' workstation once the error is fixed.