Just to clarify...I have a TOSHIBA Sat Pro M70 laptop, which is running on Windows XP Professional. It has been working fine up to now ! When I now turn on the "Windows XP" logo appears, it then runs through to the TOSHIBA page and then to a screen with prompts, including
Safe Mode
Safe Mode with Networking
Safe Mode with Command Prompt
Last Know Good Configuration
Start Windows Normally
None of these work and it returns to this page always. When I run Safe Mode it runs through the /system32/drivers and then stops at /system32/Mup.sys and then returns to original menu above.
My CD/DVD wasn't working anyway, so I've tried running the XP CD through an external CD drive but nothing is happening.