destan....I would suggest your friend download SuperAntiSpyware click here and Malwarebytes click here and C/Cleaner click here and get the latest updates from all three. Once they're updated run full scans only. If there are any bugs,it'll find them.Just make sure you run one, clear the bugs, then reboot, and then move onto the next.Use CCleaner to flush your system out.Hopefully all will then be well.
All the best.
Big L 266