Computer is infected by a virus or a malware, what do I do now?
I normally use a Mac, but I'm helping fix a friend's PC. A process called _EX-08.EXE is showing up in task manager and comsunimg 99% of CPU. If I search for it on Google I get a number of extremely suspicious sites encouraging me to download a "removal" tool, but they look like they could be malware themselves.
Two questions: how do I get rid of it, and how do I find the solution to this kind of thing myself in the future when none of the sites that come up in search look trustworthy?