|Restart in Safe Mode. Install, Update, and Run Malwarebytes to make sure you did not pick up an infection. Remove all it finds.|
If you have any problem installing or running Malwarebytes, do a system restore to a date before you downloaded this software, restart in Safe Mode, and try Malwarebytes again (reinstalling if needed).
I am not sure what version you have or if you have a fake/corrupted version but I would uninstall it and reinstall from here:
(Just noticed riider included this same link)
You have to be a little bit crazy to keep you from going insane.