I am using avg anti virus, I downloaded this https://gamefabrique.com/games/metal-gear-solid-4-guns-of-the-patriots/ I scanned it before opening and there was no viruses. I then opened up the setup file, after its done there was another file. I didnt trust it and immeditaely deleted both of them. Then I scanned the entire computer and there was no virus. After that I restarted the computer and scanned it again, looked at my phone while computer was scanning. After some time it said it was done and there were no viruses but mouse didnt work. I tried with touchpad too but it didnt work either. Keyboard wasnt working too. Whole computer didnt work. I shut it off and opened it again. It was working but after some time it slowed down and freezed. Computer didnt work again. What can I do, is this a virus?