Step 1
Restart your PC to release the locks on your profiles.
Step 2
Log on with another administrative account.
Step 3
Delete or rename C:\Users\%username%
Step 4
Delete C:\Users\TEMP
Step 5
Delete the registry key matching your SID from
"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\ProfileList".
Check the value "ProfileImagePath" to make sure you pick your own profile.
Step 6
Restart once again and then try to logon again with the user account