In the top right corner of your browser, click the down arrow in the search box. Click Find More Providers. Click Google. Check the box next to "Make this my default search provider." Click Manage Search Providers. Click Add.

To change the default search engine, go to Chrome's Settings menu and click the Search Engine section, then choose a different search engine. On the desktop, you may also need to disable or delete any Bing browser extensions.

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.