I'm posting here because more people will probably see it here than in some other forum section like questions and I need help asap so that's why it's here.

I had a virus on my laptop.

Something called a trojan or whatever and I have restarted my laptop but for some reason my sound is not working at all but it will be at different times, but when I go to youtube.com to play a vid there is absolutely no sound.

I thought it was just the video but when I click on 8 vids and none of them have sound it's a bit suspicious to me.

If anyone could please help me with this as soon as possible that would be the best ever, And I'd be indebted to you.

I'm not a computer person really, I just do what I need to do on a laptop but it won't work and I need it to.