Below is the requirements and links to Powershell installations!  Please remember to meet all of the requirements before attempting to install Powershell.
Workstation Operating Systems:
| 
Version | 
Operating systems supported | 
Requirements | 
| 
- Windows XP 
- Windows Vista | 
or | |
| 
- Windows XP SP3 
- Windows Vista SP1 
- Windows 7* | 
-.NET Framework 3.0 for Powershell 2.0 
-.NET Framework 3.5 for Powershell 2.0 ISE | |
| 
Powershell 3.0*** | 
- Windows 7 SP1 
- Windows 8** | 
  Or | 
| 
Powershell 4.0**** | 
- Windows 7 SP1 
- Windows 8.1# |  | 
*Windows 7 has Powershell 2.0 and Powershell 2.0 ISE  installed natively
**Windows 8 has Powershell 3.0 and Powershell 3.0 ISE  installed natively
Server Operating Systems
*** Powershell comes in the Management Framework 3.0 package
****Powershell comes in the Management Framework 4.0 package
# Windows 8.1 has Powershell 8.1 Installed natively
****Powershell comes in the Management Framework 4.0 package
# Windows 8.1 has Powershell 8.1 Installed natively
| 
Version | 
Operating systems supported | 
Requirements | 
| 
- Windows Server 2003 
- Windows Server 2008## |  | |
| 
- Windows Server 2003 SP2 
- Windows Server 2008 R2 | 
-.NET Framework 3.0 for Powershell 2.0 
-.NET Framework 3.5 for Powershell 2.0 ISE | |
| 
Powershell 3.0*** | 
- Windows Server 2008 SP1 
- Windows Server 2008 R2 SP1 
- Windows Server 2012 | 
  Or | 
| 
Powershell 4.0**** | 
- Windows Server 2008 R2 SP1 
- Windows Server 2012 |  | 
*** Powershell comes in the Management Framework 3.0 package
****Powershell comes in the Management Framework 4.0 package
****Powershell comes in the Management Framework 4.0 package
##Optional Feature