After api toolbar removal no access to a specific site

I have two sites that I used to be able to access on my university's website. When I noticed that I was unable to go to these two sites, I contacted the IT department to let them know the site was down; in which they responded by sending me a print screen showing that I was being redirected by the api browser and they cannot help me. I Googled how to removed it and used information from the links below and 2 other sites I cannot find. Unfortunately, even though the api browser is gone and I uninstalled and reinstalled Firefox and chrome, I still cannot get to those two sites. I also reset Internet Explorer. I can use the site on my schools computer or a friends computer but not on my own laptop. The site always says:
"The server at "the site" is taking too long to respond.

The site could be temporarily unavailable or too busy. Try again in a few
moments.
If you are unable to load any pages, check your computer's network
connection.
If your computer or network is protected by a firewall or proxy, make sure
that Firefox is permitted to access the Web."

It does not matter if my firewall is off or on either, it still won't access those sites. I removed the browser bar a couple months ago and it still does not work.

http://forums.majorgeeks.com/showthread.php?t=266869
http://www.bleepingcomputer.com/virus-removal/remove-search.certified-toolbar.com-hijacker

I tried to fix the issue by following the links below to no avail. I cleared the cookies and cache. Reset Mozilla and the about.config. Nothing has worked.

https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can
http://en.kioskea.net/forum/affich-3788-connection-has-timed-out-firefox
http://forums.majorgeeks.com/showthread.php?t=242426

Does anyone know how to fix the laptop to be able to access those sites as it did before api.browser?