Page History

...

• On the Settings menu (Settings icon is on the far right) click Options
• Choose the Advanced icon
• Select Network
• Under Cached Web Content click Clear now.
• Close the browser and reopen

In Internet Explorer

 Open the Internet Options Click on the cogwheel icon (top right) and select 'Internet Options' from the drop-down menu

• Select the General tab
• Under Browsing history, click Delete.
• Un-check the 'Preserve Favorites website data' box.
• Check the 'Temporary Internet files and website files', 'Cookies and website data', and 'History' boxes.
• Click Delete. And then OK
• Close the Internet Explorer window and reopen.

...

In Chrome

• Options icon > History > Click Clear browsing data
• Ensure Cached images and files is checked
• Click Clear browsing data
• Close the browser and reopen

Further help

See also refreshyourcache.com for more detailed information

and Further troubleshooting of browsers and systems in Moodle Help