If you are locked out of the desktop, you'll have to tell more. Such as no BIOS screen, lost Windows password, boots to blank screen and so on.
Bob
The update was saved to the desktop, as in the Versalink online instructions. This was the first - and last - time I saved it in this manner. My desktop Windows XP (SP3) has locked me out since downloading the firmware update for my Westell Versalink Gateway Modem. I even tried to gain access via IDE-USB Cable, using my laptop.. it won't let me. Out of ideas here.

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