I'm working on a small PC project and would like to use this icon but can't find any online. If someone happens to know of where I could find one, it would be much appreciated!
Have you considered taking the small icon you have a screen-capture of, and making it into a vector graphic? That way you can manipulate it however you want, and at the end of the day output any size raster graphic you want. There are tools for this which you can get from the Web.