|Google for the three programs, rkill, tdskiller and MalwareBytes (all are free).|
Install all three programs (MalwareBytes will want updates - which is fine). Note how to access these programs afterwards.
To get in to Safe Mode tap the F8 key while booting. Select Safe Mode from the list. Eventually you will see your desktop (although in this mode it will look rather different).
Run each of them in the order given (do not close Rkill until the rest have completed). Let MalwareBytes remove all it finds.
It is OK to run then from ordinary Windows but they are more likely to clear your issue if done in Safe Mode as this limits the number of running processes, which is why it was suggested.
If the above is not clear then either pop back with your queries or seek hands-on assistance from someone.
Always pop back and let us know the outcome - thanks