Instead of my username I get "Other User" during startup.

The 'wrong' name in the Users folder is the only one there?  If so, it seems like these got cross somehow.  It honesty sounds to me like your best solution is to repeat your exercise by creating a temporary user (or temporarily enabling and using the built-in Administrator account*) and then create your actual profile.  That's what I did when I first installed.

*If you take this route, please only do this one action and then go back and disable the built-in admin account.  You don't want it getting messed up, changed, touched, or even used other than this one case. It's here as a fallback and using it daily can result in a need to reinstall your PC.

Ah I didn't realize that was you.

Even the desktop classic Control Panel will pop open the metro interface for creating a new account, so you're good there.  What I would do is make a local account (not linked to a MS account).  I did this myself because I wanted my local account name to just be 'shawn', but the automatic generated one called it 'shawn_000').  So once you create the local one, go delete every other user from the Control Panel.  Then open the C:\users folder and delete their folders too, just to be sure.  Then go link your online account to the new (and only remaining) profile.

You know, another way to make it easy to relocate your shell folders would be this (just another option):

1. Create folders on your extra drive for Docs, Pics, Video, Music (whatever else). 
   
   
2. Then, right-click each one and choose "include in library > Documents".  That way that location from the other drive will show up in your documents library, and you can even set it as the default storage place, without having to go edit all those location tabs.  This is actually one of the reasons for Libraries.

This is getting very frustrating. I have now created numerous new user accounts and deleted previous ones and nothing changes as far as signing in. I still get that "Other User" message.

On top of that somehow along the way I lost all of the files. I know they are still there somewhere but I can't see them. My latest new account is basically a blank slate. I am reluctant to try to build any files or set anything up until I can solve the logon problem.

On my C:\ drive under users, I have two other files in addition to one that I have currently created. One is the old name that I originally had and the other is the weird named on: miste_000 this name comes from part of the second user account that I created. I only used this account long enough to re-create my original account, but that name keeps sticking around.

 If I go into user accounts in the control panel or NETPLWIZ these other user names are not listed. The only place that I can see them is under C:\users

I have not been able to delete either of them. For the first one I get a message that the file names are too long to delete. That's a new one on me. On the second one (the weird named one)it tells me that it can't be deleted because other files or programs are being used.

I'm hoping if I figure out how to get rid of these entries I will solve the problem.

It took me 5 or 6 hours to put this computer together. It's all nice and new and as far as I can tell very fast, but it's been nearly two weeks and I still can't use it properly. In between creating new user accounts, I have to recreate my e-mail accounts because I have things that I need to do.

And here is just a bit more on my problem......

After much effort I have managed to get rid of the odd user account name. This account is named "Dan" (my first name) and it is either left over from my first user account or was brought forward with my Windows 7 stuff from the old PC. That was the name on my user account on the old machine.

This account is supposedly empty but if I try to delete it I get a message that there are files which are too long for the recycle bin. I didn't see it in my user folder yesterday. I moved it out of the user folder but that didn't help.

Also I have noticed that when I get my message "Other User" and click on it, the name "Dan" is already in the box for the user name. It seems kind of phantomed in so I didn't notice it before. I tried leaving it there and using all of the passwords that I could think of but the only way to login is to use my current user account name.

Note -- I also tried signing in as local account but that did nothing.