1. Refresh the page. Sometimes it happens once or twice. 2. Update your browser. 3. Disable or uninstall all add-ons, they may be tampering with the code. 4. Switch to Firefox(I see your using IE) 5. Uninstall the browser and download the newest version from the Internet(An update may have had broken coding and corrupted your browser) 6. Download all the newest updates for everything on your computer.
If the problem remains, your computer may have an error somewhere in the system, and you have to reinstall Windows(This is a last resort if you are willing to erase everything on your computer just to see a web page load properly. I do not recommend it)
Yeah, try that too. And avoid putting your computer to sleep, loads of errors occur when you do it for some reason.
And before rebooting let the computer cool down for a minute. Leaving a computer on or a browser for over 5 hours at a time is even worse than letting it sleep three times.