Just in case you installed the Google Taskbar, try their support article.
https://support.google.com/toolbar/answer/9245?hl=en
When I opened Google, I used to have 4 links/icons in the top left-hand corner : go backwards (search), go forwards, bring up-to-date, and the 4th (a little black house) return to starter page. The latter is no longer there. How can I get it back.

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