If you see the error message asking you to check your administrative privileges, please try the following steps to troubleshoot 

# Error Description
> An error occured while trying to access startup disk settings.
> You may not have priviliges to change the startup disk.. Make sure you have administrative privilegese and try again.




1. Open cmd.exe if not worked, run as administrator

2. Type runas /trustlevel:0x20000 "C:\Windows\System32\AppleControlPanel.exe".

3. The bootCamp panel will pop up after step 2.