First disable all the background processes except windows processes (using command msconfig). Follow the following steps.
1.) Start-> Run
2.) Type "msconfig" (without quotes)
3.) In "System configuration" window, under "Services" tab, check "Hide all microsoft services".
4.) Now disable all services except the Anti-Virus that you installed.
5.) Now run the Anti-Virus(Bitdefender highly recommended) and scan your machine.
Afterwards scan with following applications;
2.) Removeit pro
Now reboot your machine. I wish it will help you
Thank you :)