I'm afraid to use this tool even under the supervision of a qualified person. I hope I never have to use Combofix. To me is no difference between the words "Combofix" and " Reinstall".
Yes, it is safe to use.
this program is great, I don't know how many times it fixed my slow running computer.
Dude you schouldn't just randomly start these programs when your PC is slow. There are alooooot better programs that could easily be read from a new computer user to help speed things up again.