some websites can't be reached

That is correct, but in the event that this was coincidental I was curious as to what AV/Firewall you have setup.

Can you ping the website from a command prompt?

Ping Test

• Hold the Windows key and press R on your keyboard.
• In the Run box that appears, type CMD and click on OK.
• Type the following command: PING startlogic.com
• Right click in the command window and choose Select All, then hit Enter.
• Paste the results in a message here.
• If necessary, use a text file and removable media to copy the results to a computer with internet access for all of the above.

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Also, try entering the following IP address into the URL box instead of "startlogic.com": 207.148.228.20