Hi, thanks for the advice but I can't log on for long enough to do that, as soon as I get to the desktop it goes straight to the blue error screen saying that a problem has been detected and windows has shut the computer down to prevent damage and the following error code:

Stop: 0x0000008E (0xC0000005, 0XF65575B3, 0XF2FA7A20, 0X00000000)

System32: 1zx32.sys address F6AD55B3 base at F6AD3000 date stamp 45F5a5a0

Beginning dump of physical memory
physical memory dump complete

Has anyone got further advice please as I really havnt got a clue. Have started in safe mode but can't find anything wrong (not that I know what I'm looking for!!) Many thanks.