How do I make Google my default search engine on my address bar?

[victoriouscalculator670]

Every time I search using the address bar, it automatically uses "defaultsearch.net". I tried going to settings, and changing it to google. It seemed to have worked, until I exited out of google chrome to my desk top. When I came back, it apparently had not saved the changes, because it was back to default search.
I ran a Macaffee scan and found nothing.

[zeric7x]

This may be a virus issue. I suggest downloading the free version of malware bytes and running a full scan on the computer. If the scan finds anything delete everything it finds. Restart the computer and then try changing your home page again.