wogboy, I believe Alex has tried your suggestions. As he states "the other profiles I have do not connect".
Alex, why do you want to delete your user profile, if I may ask?
Have you tried to rename the profile instead?
As wogboy has suggested, do you have Administrator privileges on both accounts?
Why exactly do you want to delete it?
Has the profile been corrupted?
What have you done, in testing to see if your 'new' profile cannot connect?
Is it any different to your current profile?
You can have multiple profiles on your computer, but you cannot delete an Administrator account if it is the only Administrator account on the system.
You will only be able to switch profiles if you have a backup profile, which you would probably know already, but I would tell you to create another Administrator account, or rename the Administrator account.
Start, run, control userpasswords2 will prove useful.
Also, you might like to look at:
Start, run, sysdm.cpl, Advanced (tab).
Under User Profiles, click Settings.
You might also like to manage your accounts, in tree-style view.
Right click on My Computer, Manage.
Left hand side, Local Users and Groups
Expand Users
You will be able to manage users, as is the case in control userpasswords2 (above) - check each user account and their corresponding account properties, or group-type.
All the best,