|Restart in Safe Mode with Networking (F8 at start up).|
Do a System Restore to at least a week before you be began seeing problems. Restart back into Safe Mode.
Then download Malwarebytes but when you save the installer, change it's name (anything but leave the extension the same) and save it to the desktop. Then when you install it choose the custom options and change the name of the folder it is installed in (use anything, even: MyHelper). Update it and run it still in Safe Mode. Remove anything it finds.
Update your Antivirus program and run that also.
If either finds anything, rerun Malwarebytes to make sure it is all gone.
Restart in Normal Mode.
You have to be a little bit crazy to keep you from going insane.