I have discovered the problem was due to a hidden toolbar I had no idea was installed.
That is an excellent example of foistware being installed on a computer. To prevent this type of unwanted software in the future, please pay close attention to the dialog boxes as software is installed or even updated. Foistware will be disclosed in the EULA (End User License Agreement) of almost all software, though people do not read the EULA, they just click I agree
and continue to install said software.
Thank you Dunshter for letting us know that you found the cause and resolved this problem.