To change the default search engine: Launch Chrome. Click the three-dot menu on the top right. Click Settings. Select Search Engine. Select the engine of your choice from the list of search engines in the drop-down menu. If the browser search engine keeps resetting back to Bing despite that, you'll need to remove the adware or malware responsible.

Click More actions (...) on the address bar. Click Settings. Scroll down and click View advanced settings. Under Search in the address bar with, select Bing.