General Computer Questions

If I’m downloading a movie to my USB can a virus that comes affect my pc?

i use google and i click on the link it goes to something else and if im on a other website and i click a link it takes me to a different website too i did a virus scan and it said that every thing was ok

how do i remove a virus that infected my computer

My husband clicked into an ad for a demonstration of adware and spyware from a company and once he did the company downloaded a program into my computer that took over my computer. I cannot open any other program on my computer including  go back. If I do this it come up that this program [...]