Need help recovering from BSOD (STOP: 0x7b)

I have a Dell Inspiron E1505, 1GB RAM, Hitachi SATA 120GB HD, Windows XP SP3 Home.

The pc was working fine before the problem occur. I was operating on AC (with battery removed). During a routine shutdown, I accidentally unplug the AC cord while the computer was still saving settings. The next time I power it up, I got the BSOD with the STOP 0x00000128 error code. Here's what I've tried so far:

Tried to use Recovery Console but it rejected my Admin password as invalid and will not go into Recovery Console mode. (Incidentally, it did accept a blank password once and let me in but never again after that one time). The one time it did accept the blank password, I was able to copy a recovery system file from the Win Xp CD to the hard drive c:\windows\system32\config folder. After reboot, now I got a STOP 0x0000007b error code. The second parameter of the error code is the 0xc0000034 so I learned that this is the STATUS_OBJECT_NAME_NOT_FOUND error. I've unable to find anything on the web to address this problem.

I have created an Ultimate Boot CD for Windows (UBCD4Win) boot disk and it would boot up but will not start Windows from the UBCD disk so I cannot use any of the tools from UBCD. Starting Windows from the UBCD gave me the same x7b error.

Does anyone have other suggestions as where I can go from here? I'm tempted to reload Windows but only as a last resort. Does anyone know if repairing an installation rather than a complete reload will help? And will a repair wipe out my applications and data I have on the drive?

Thanks,
BSOD2008