I need help with a hacker problem.

I’ve had a little window poping up lately I think it might have been from a hacker disguised as a MSI update software for my computer. I finally gave in and pressed to download an update and immediately my google chrome opened up, and like 10 windows tech support tabs opened up. I then shut off my computer, waited a few minutes and turned it back on and immediately chrome opened up. I’ve tried trying to find them using the “netstat-ano”. But strangely my computer couldn’t find anything. I’ve now unplugged my computer, Out of fear with my petite skill, I need someone to fix my computer and the virus.