1. Ensure that you are logged in as administrator. If you are logged in as a guest user, click 'Start,' click the arrow beside the 'Shut down' button and select 'Log Off.' Type the administrator username and password to log in.
2. Check for any mistake in the spelling of folders or drives if you just manually typed the computer location/path. If the installation allows you to browse for the path, opt for that alternative instead to avoid typographical errors. Check the path and try completing the installation again.

3. Install the program to a different directory if the path exists but you still get the same error. This is because the path may be corrupted or a virus may be preventing you from installing the program into that location.
4. Ensure that the installer you are using is not corrupt. Otherwise, it may be the one causing the error. If you just downloaded the installer from the Internet, make sure that it came from a reputable website. Download another copy of the installer file and try installing it to the computer again.