*sigh*
Disconnect the machine from the internet and any networks, boot it into safemode and then use your anti virus to run a scan. If that doesn't work, download malwarebytes and run another scan with it in safe mode. If that doesn't work take it to a shop to get it done professionally.
It's really important you change your passwords to everything you have ever logged onto from the infected machine FROM A DIFFERENT, UNINFECTED COMPUTER and check with your bank that no unauthorised transactions have been carried out. The amount of information stored on your hard drive it ridiculous, someone who knew what they were doing may be able to get hold of your bank details, facebook account, Paypal account, home address etc.