Virus attacked windows services on laptop

Hi I am new here. I just want to ask some help. I do have a laptop and some sort of virus turned off some windows services. Current status:

- Wifi doesnt work(cant detect wifi. wifi icon doesnt even show)
- Audio services not working

I only noticed these things so far. Don't know if it turned off other services.
Some laptop infos:

Acer Aspire E1-471
Windows 7 Home Basic

Please help :(