Fake google chrome .exe

Please help me! I have read up a lot on the other people with this problem. A file called "rchnxsshh.exe" appears, and it's description is "Google Chrome" although I've uninstalled Chrome. When I open file location, it is in my appdata/locallow/ various folders. I've read this is a backdoor Trojan that has entered my system through a flash/java exploit present in past versions.

I'm generally capable and good with computers but I am not sure what to do, as all the other solutions have been...

Fake google chrome .exe