What was the error message?
Try to disable the Norton or McAfee security software, then:
Can you resolve the ezboard.com into IP address? Try using ping command, from Start -> Run -> type "cmd" press enter -> from command prompt, type "ping www.ezboard.com", see if your PC can translate it into IP address like 184.108.40.206.
Note: ignore the quotation (") marks when typing the commands.
If the PC can't translate www.ezboard.com into IP address, try checking the contents of your hosts file, located at c:\windows\system32\drivers\etc
Make sure there is no mapping for www.ezboard.com, if any, try to "remark" it, by putting "#" before it.
Alternatively, try typing "220.127.116.11" directly into your web browser's. See how it goes.