Sounds like something went wrong in the reset. The System Administrator account has more permissions than a User account at the Administative level.
You might fix things if you activate the SysAdmin account. Go to c:\windows\system32 and right click the file cmd.exe then select RunAs Administrtaor.
At the prompt in the Command form that shows up, type
net user Administrator /active:yes
then hit Enter.
Restart the machine and Administrator will have been added to the icons on the welcome screen. Log in to that account and see if things work for you. Oddly, there are still some things that even that account cannot do.
If you want to get rid of it, the syntax is as above except "yes" becomes "no".