If I try to change the execution policy, I get a message that says I can\'t modify the registry because I\'m not an administrator.
It seems like this should be possible,
If your domain administrator hasn't forbidden it, you can do this:
Set-ExecutionPolicy -ExecutionPolicy Bypass -Scope CurrentUser
This changes the default execution policy for PowerShell sessions run under the current user, rather than setting it for all users on the machine.
If you instead want to change the execution policy for just the current PowerShell session, you can use this command:
Set-ExecutionPolicy -ExecutionPolicy Bypass -Scope Process
However, if your domain administrator is using the "Turn on Script Execution" group policy, you will not be able to change your execution policy at all. The group policy setting makes the Set-ExecutionPolicy cmdlet ineffective.