I have been searching for an answer on this for a couple of days. Basically, from what I can tell, Toshiba has hijacked Google Chrome and will not allow you to change away from "start.toshiba.com". I have edited that out of the registry, changed it as per the Toshiba instructions (which is completely disingenuous when they act like this was not their intent - to drive false traffic to their website).
Basically, don't ever buy another Toshiba product. That's how I'm fixing this issue. Eventually it will fix itself if everyone else follows this method.
There is apparently no solution.