Windows 2000 Professional - Admin lockout - change of Admin?

I have a Compaq laptop with Windows Pro 2000 - what happened today has happened once before...I turned on the computer and was not paying attention, put in my password, and it went through some stuff, maybe updates (?) - I don't know, it always takes so long to boot up - when I took a look again it was back to the Admin log-in, and so I put in my password again - and this time, it opened to a new desktop, with nothing much, an Internet connection wizard, getting started with Windows Professional, etc. -- everything else inaccessible.
The last time this happened I found some instructions on the net, and had to change the registry - it was about a second Admin account being started for some reason, and I had to go in and delete that...but I can't find those instructions now.
It worked perfectly fine the last time I used it, there was no reason that I could see, I did not do anything, what's the deal with this? How can I access my files? The hard drive still says it has 12 GB of stuff on it, so I know it is all still there somewhere!
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RubenvdLindenConnect With a Mentor Commented:
I suspect your user profile is corrupted, causing Windows to create a new user profile for you.

To restore a user profile, please read this article:
However, to be sure not to lose any data, I prefer the solution in this article:

I hope this helps. If you have any questions concerning these articles, feel free to ask!
ChickenlilAuthor Commented:
I followed the directions to create a new user profile and import the files to it, which worked, except the Outlook files were hidden and it took some doing to find them and import as well.
I'll assign the point to you, but will give you 50 more if you can tell me, why did this happen?
It's the second time, and there was no sign of anything strange, no viruses etc, only maybe a few odd javascripts I removed - what corrupts the user profile? Is it something unique to 2000 Pro? Quite a bother!
I'm sorry, but there's no real definite answer for the cause of profile corruption.
Corrupted user might be caused by power failures, incorrect shutdowns of the system, network- or software problems.

In my experience, it's not a specific Windows 2000 Pro problem. In the past ten years, I have seen it happen on all versions of NT (4.0, 2000, XP). Most of the times the system was connected to a Windows domain, with a failing roaming profile.
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