To clear your browser history and cookies on your PC, you should:

1. Open your browser and go to its settings menu, usually listed three dot icon in the upper right
2. Navigate to Privacy and Security and select Clear History
3. Choose how far back you would like to clear your history, ranging from the past hour to everything
4. Select Clear Data and select what you would like to clear (History, Cookies, Cache, etc)
5. Confirm that you want to clear the data