Windows password not accepted

[Nu2dgame]

A corrupted or changed logon password is preventing me from logging on to a fully patched and updated XP Pro laptop. Sadly, this machine has only the one user account, so trying a different user/password is out.
The kicker is: the laptop's CD-ROM is long ago dead, and I have been using a USB attatched CD-RW instead of replacing the built in CD-ROM.
I am now effectively locked out of my own machine!
If it helps, I believe the corruption occured when I tried to change from a Corporate Domain to a home LAN Workgroup using XP's Network ID wizard.

It is a hand-me-down Compaq Presario 700 with an AMD Duron CPU.

[Panama Red]

Due to the constraints of our Forum Rules, discussions involving methods to bypass passwords is forbidden. We have no way of knowing if a user's intentions are honorable or not. Plus, by providing a fix to your problem we may unknowingly provide a means for an unscrupulous person to hack into another system. Thank you for understanding. I'm forced to close this thread. I'd suggest using google to find a solution.