What browser are you using?
1. Microsoft internet explorer
2. Mozilla firefox
3. Google chrome
If a particular website is not working, or not working properly on your computer or laptop we would suggest that you try a different browser,
To install Chrome Visit this link
https://www.google.com/chrome/
To install Firefox
https://www.mozilla.org/en-GB/firefox/new/
It might also be worth trying to view the website on one of your colleague's computers.