PowerShell on Windows 7: Set-ExecutionPolicy for regular users
Set-ExecutionPolicy RemoteSigned -Scope CurrentUserThis will set the execution policy for the current user (stored in HKEY_CURRENT_USER) rather than the local machine (HKEY_LOCAL_MACHINE). This is useful if you don't have administrative control over the computer.
RemoteSigned is a safer execution policy than Unrestricted. If you download a script and RemoteSigned is preventing you from executing it, then after vetting the script, remove the restriction by opening the file's properties and flagging "Unblock". If this is infeasible, then you can set the policy to Unrestricted instead.
If you (or a helpful admin) runs Set-ExecutionPolicy as administrator, the policy will be set for all users. (I would suggest "remoteSigned" rather than "unrestricted" as a safety measure.)
NB.: On a 64-bit OS you need to run Set-ExecutionPolicy for 32-bit and 64-bit PowerShell separately.
This should solve your problem, you should try to run the following below:
Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser