Remember when M$ integrated IE with the OS way back when? Some of you may not be old enough to remember but that nightmare is coming back to haunt the world of IT. M$’s Internet Exploder doesn’t delete “objects” properly and the process allows malicious code to be injected by any website a hacker can control. M$ has only workarounds so far which means if you run IE on that other OS you are taking your life in your hands, literally.
I recommend Debian GNU/Linux. It won’t leave you floundering for a solution. More likely Debian will give you a choice of solutions for any problem whether you have one or ten thousand PCs. If you don’t know how to replace that other OS with Debian GNU/Linux backup your data and go here. If you do know how to install an OS, go here.