Recently a person at my company decided to fix a "virus" themselves. Now they are unable to open any browser. This includes Firefox/ie/Chrome. When I say they don't open this means that it doesn't go into the task manager or anything. You get the loading hourglass for a half second and then it closes. Everything else seems to run normally but no browsers will run. I have double checked all dns/ip settings and proxy settings. Malwarebytes comes back empty and hijack this has been cleaned. any suggestions?