Answer
The simplest way is that you can just press "F5" on your keyboard, or press the
button on your browser.
If that doesn't work, try pressing the Ctrl key at the same time while pressing your browser's
button.
If this doesn't work then you need to clear your cookies.
Clear your Cookies in Chrome:
- Press the icon in the upper right corner. Press "More Tools", and then choose "Clear Browsing Data..."
- Make sure that "Cached Images and Files" is checked (everything else can be unchecked) and press the blue "Clear Browsing Data" button