The Way to Unhide if You so Desire
Again, this change requires modifying the registry. And that means opening up the regedit utility. If you are already familiar with how to do this skip to the next paragraph. If not, then do the following instructions marked in red. Click Start, then Run, then type 'regedit' in the box, then click OK.
In the Registry Editor you will see xxxxx in the left pane. The right pane should be empty if this is the first time you've used it. In the left pane, choose HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\
CurrentVersion\Winlogon\SpecialAccounts\UserList.
Now in the left pane, under the Name header, look for an entry named 'Administrator.' If it exists, great, now jump to the next paragraph. If it does not exist, you'll need to create it as detailed in the following instructions. Right click anywhere in the right pane. Hover the cursor on the icon 'New' and on the submenu that pops out, choose 'DWORD value'. Name this new entry 'Administrator' (case sensitivity is important here) and press enter.
Now double click the entry named 'Administrator.' In the box that opens, type 1 in the field next to Value data. Then click OK.
If you later feel remorseful about this decision, you can easily reverse it. Simply go back to the Administrator entry by following the above directions. Then you can either delete the entry, or change the Value data to 0. Remember here the binary digit rules: 0 = no and 1 = yes.