I will not assume any responsibility for problems that may occur to your
system from using any of these suggestions. please make a backup of your data before making any changes to your operating system.


Reboot your computer while holding down the F8 Key. At the
Advanced Options Menu select the option for Safe Mode and press Enter.
Reboot your computer while holding down the F8 Key. At the
Advanced Options Menu select Last Known Good Configuration.

To run the Recovery Console from CD boot with the Windows XP
CD (or with the optional 6 floppy disk set) and select "R" at the Welcome
Screen.
The screen will switch to black and you will be asked which
installation to log on to. If you only have one installation you will press
"1". Remember that numlock is off at this time.
Next you'll be prompted to enter your Admin password. By
default it is created blank so just press Enter.
At the C:\Windows command prompt type "Help" for a list of
commands you can use.