I've been unable to visit various websites for some time, feel like it's my computers problem

[CinderEmma]

There are various websites that I can't visit, which has been annoying. Some websites are not important, but various ones that I really want to visit like normalboots.com (the homepage of one of the youtube channels I like) and my bus website. I've had various people check on their computers, and they can visit these sites. I can't see them with IE, FF or Chrome. I checked FF and it has no proxies. I don't think it's my antivirus, as it has different ways to tell you if it hates a website. Any other tips on getting them to work?

[KiaraRawks]

This sounds exactly like my problem, hopefully someone can help us both.

[anothereyjana]

Maybe it's that redirect virus I keep hearing about? (http://www.ehow.com/how_5842581_remove-google-redirect-virus.html)

[ellacharmed]

You don't think it is the Antivirus software blocking it, you mean? But as @anothereyjana pointed out, have you run full scans for virsues, malware, spyware, etc?
What Antivirus and Firewall program(s) are you using, by the way?

Does it only affect just this one machine in the house, or like @KiaraRawks's issue, all machines in the house?
What Operating system is this system using?
Do you connect wirelessly or via Ethernet cable? If wirelessly, have you tested a direct connect?

And what is all the "different ways to tell you if it hates a website"? The error messages usually give a clue on what is wrong.
There's no pattern to the sites that can load versus the ones that cannot? So it affects all local and international sites the same?

And the same questions I asked KiaraRawks: The router has been reset (turned off and on)?
Have cleared caches, cookies, histories, dns etc on all browsers and computers? Either by using the options on the browser themselves or by using CCleaner or its ilk?
Have run full Antivirus, Malware, Spyware scans?

When did this start? What was changed on the system or router, if any?