Powershell: How to uninstall Powershell pre-v. 2.0

Althouth the folder is the same, it is Powershell v2 you have on your Win7. You can confirm this by running this command from inside powershell: $PSVersionTable

on my (win7) workstation it reads:

> CLRVersion                    
> 2.0.50727.4927                                                                           BuildVersion                  
> 6.1.7600.16385                                                                           PSVersion                      2.0    
> WSManStackVersion              2.0    
> PSCompatibleVersions           {1.0,
> 2.0}                                                                               SerializationVersion           1.1.0.1
> PSRemotingProtocolVersion      2.1

Where "PSVersion" is the giveaway :-)

Is explorer simply not starting? have you tried typing explorer.exe in the command prompt window? I guess this isn't the case you wouldn't normally get a command prompt when logging in. It sounds like somehow the shell has been removed, effectively giving you a server core install, in which case try issuing the following from the command prompt. This should re-enable the shell if it has been somehow disabled.

Dism /online /enable-feature /featurename:Server-Gui-Mgmt /featurename:Server-Gui-Shell /featurename:ServerCore-FullServer