Create a folder at the root of the c: drive called "temp"
Download the OptionPower install file and save it to the temp folder (If you've already downloaded the file you can just copy it to the temp folder)
In the search field type "command prompt", right-click the icon for the command prompt and click Run as Administrator
At the prompt Type c:\temp\OptionPower?.?.?.?_20??.exe /L*vx c:\temp\OPinstall.log (note: the question marks are placeholders for the actual file name details, i.e. OptionPower7.1.01.05_2016.exe)