Certain websites sometimes won't load

[123qbe456]

Hello,

I apologize in advance if I'm missing any information--I'm not very familiar with computers and even less familiar with Windows. Through my work, I've been issued a laptop running Windows 7. Some days, it works perfectly fine, but on others, certain websites will refuse to load (I've specifically noticed that I cannot access my organization's website). There is no error message or timeout, the page just won't load. This happens for no apparent reason. I've tried most fixes you can find online easily (using different browsers, clearing the cache and cookies, using a different DNS server address) but nothing has worked so far. Any ideas on what I can do to fix this? Again, when I start my computer up each morning, sometimes it works perfectly, and other times it doesn't.

Update: It looks like it may be something with the Internet connection? If I switch from my work's employee Internet to the guest Internet and then resrart my laptop, the websites will load.

[Mark.]

being a company laptop, is it possible the IT department as 'locked down' some things to stop employees doing certain things?

[123qbe456]

Mark,

I don't believe so. We are a small organization, and only have external IT support. They looked over the laptop before it was issued to me, and no other employees are having the same issue I am. I pinged the websites I'm having trouble with and there wasn't any issue with the connection.

[Geek-9pm]

After making a reasonable effort to fix the problem, it  is now the time to use your warranty and ask the vendor for a replacement.

[Mark.]

unlikely a warranty job (at this point).
can you explain further what you mean by 'employee internet' and 'guest internet'?so you take this laptop home and plug it into your home internet network how - wireless, ethernet cable?
what AV software is on it?

[123qbe456]

Yes, so at work, we have two networks: our internal employee network, and a guest network. I don't typically take my laptop home with me, and haven't tried it on my home internet.

As far as AV software, I have Trend Micro Security Agent anti-spyware, and Windows firewall is turned on.

[alexd0100]

When this occurs, are you able to access any website at all? What Internet browser are you using? Is anyone else having the same problem when trying to access the company website at the same time as you? How many computers are there at your job?

[123qbe456]

Yes, I can still access the majority of websites, just not a select few (I always notice it when it happens because it won't allow me to connect to my organization's website). I'm using Chrome, but I've tried it with Internet Explorer and still had the same issue. No one else is having this issue--it's just this laptop. We have approximately 30 computers, but some are desktops and others are laptops.

[alexd0100]

I would do an "ipconfig /all" and check out my DNS servers.

I have experienced a similar problem when using IPv6 DNS servers.

You can try disabling IPv6 for that adapter ("Network and Sharing Center" > "Change Adapter Settings" > right-click on the connection you're using > "Properties" > click the check box next to "Internet Protocol Version 6") You might need administrative privileges to make this change.