Toolbars don't usually get installed unless you allow them to do so.
There's almost always the option to uncheck and decline to install them.
That applies to toolbars, home pages, search pages, scanners, etc..
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Download and save and then install the free version of
Malwarebytes Anti-Malware 1.61.0.1400 SUPERAntiSpyware 5.1.0.1002
Make sure to update their definition files during the install process.
Make sure to uncheck and decline to install any extras, such as toolbars and homepages, they may offer.
After they're installed and updated, restart the computer.
Run a quick scan with each one.
After each scan is finished, select and remove EVERYTHING that was found.
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