Can't Remove GoSSave Extension From Google Chrome

Hello. For several months, Google Chrome on my Windows 8 laptop (at work) has been infected with the GoSSave 2.0 extension (my other regular browser, Firefox, has not been affected). I have attempted to remove it via Add/Remove Programs, Malwarebytes and clicking the trash can in the Extensions menu, but only the latter works on a temporary basis. Each day when I start up the computer and open Chrome, I need to manually remove it.

For the last few weeks, I've also gotten a pop-up screen...

Can't Remove GoSSave Extension From Google Chrome