Winxp boot password lockout

[microsigh]

Hello in There All,
Am facing a doozie here. Am comfortably pc literate. OK. System: Winxp Pro SP3 IE8; install disc Winxp Pro SP1 version 2002. Was simply setting up network connection through network wizard; text box advises reboot for changes to take effect, rebooted, and Good Grief, the system has mysteriously materialized a boot password box with my username and a password from another world. Tried OPHCrack, OFFLINE NT Pass/Reg, to no avail. There is no hidden administrator; at password box screen, will not recognize CNTRL+ALT+DEL (2). Can access DOS through install disc repair feature. DOS does not recognize CMD (not in list 'help'). Finally cleared CMOS (jumper), but the boot password box is as alive as ever. Bill's boondoggle is now my nightmare. Am locked out of my computer, clueless. *censored*?
Can anyone assist?  Wow, and Thank You.

[DaveLembke]

So you reset CMOS due to a Windows Authentication Problem?

Is this a locked out system due to the Windows Logon Credentials or are you met with this right at boot of the system in which its a BIOS System Lock Password?

Big Story cut way short >>>  in the past I had a similar problem computer if this is a Windows Authentication Problem after clean build.

Thinking I did something wrong somehow, I blew away Windows XP and installed clean again. Same exact problem came back. In the end, the problem was the Hard Drive was messed up causing Windows XP to act up. I ran the HDD test utility from seagate on this system and the drive had problems. I replaced the 12GB HDD with a 20GB HDD and the problem was fixed.

Things I tried prior to HDD diagnostic was:
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Different Windows XP install Disc = No Change
Different CD ROM = No Change

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Swapping out the damaged 12GB HDD was the fix for me.

[SuperDave]

Perhaps something here will help.