The Startpageing123.com program from the Adware/ShortcutHijacker family of browser hijackers is bundled with other free software that you download off of the Internet. Once it is installed it will hijack your installed browser’s home page and search engine. This adware will also modify your web browser’s shortcuts. The guide below will remove these changes so that you can properly use your browser again. It is important to note that this program is installed by other programs that did not adequately disclose that other software would be installed along with it.
Source: https://www.bleepingcomputer.com/virus-removal/remove-startpageing123.com-hijacker