I've installed Sitecore Powershell Extensions version 5.0 on Sitecore 8.2 update 7, I also installed Microsoft.Management.Infrastructure as it was a dependency. I installed this library through NuGet and then added a reference to it in my Visual Studio project. After publishing to my local site I get this error when trying to access Sitecore:

Could not load file or assembly 'Microsoft.Management.Infrastructure' or one of its dependencies. Strong name signature could not be verified. The assembly may have been tampered with, or it was delay signed but not fully signed with the correct private key.

I'm not sure where the problem is. Anyone have any ideas?

I'm on a Win7 platform running IIS.