1 - Colocar o DVD do Windows no leitor
2 - Abrir uma linha de comandos com permissões de administrador
na pesquisa escrever "cmd" (1), botão direito e "Run as Administrator"
3 - Já na linha de comandos, digitar:
C:\Windows\system32>DISM /online /enable-feature /all /featurename:NetFx3 /source:g:\sources\sxs
Deployment Image Servicing and Management tool
Version: 6.2.9200.16384
Image Version: 6.2.9200.16384
Enabling feature(s)
[==========================100.0%==========================]
The operation completed successfully.
C:\Windows\system32>
Deployment Image Servicing and Management tool
Version: 6.2.9200.16384
Image Version: 6.2.9200.16384
Enabling feature(s)
[==========================100.0%==========================]
The operation completed successfully.
C:\Windows\system32>
ATENÇÃO: respeitem as maiúsculas.