Search-Zone browser hijacker (removal guide).
Search-Zone is an unwanted browser extension attacking Google Chrome browser. This extension operates as a browser hijacker by changing a lot of crucial browser settings (default home page, search engine and the new tab URL). Get rid of it with Combo Cleaner Antivirus via the official page - https://www.combocleaner.com or, optionally, refer to the manual instructions given in the video to fix your browser.