Windows 7 PC browsers having trouble to open certain sites but not others

Posted by user55345 on Super User See other posts from Super User or by user55345
Published on 2010-11-12T05:09:49Z Indexed on 2011/01/12 17:55 UTC
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internet

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browsers

Hi,

My Win7 PC these days acting very weird:

Examples: It can not open bing.com, alexa.com, msdn.microsoft.com (blank page or page can not be found); It can open zdnet.com but lost all CSS layouts and pictures; It can open stackoverflow and Google no problem;

I tried all three browsers (IE8, Chrome, Firefox 3.6) same thing.

I didn't change anything on this PC in days. This PC does have Anti-Virus installed and updated. I'm also pretty sure it's not a network problem, because my other laptops are just fine at the same time.

The only thing I can think of is it might be some auto-update stuff underneath happened without my knowledge, but I have no idea where to troubleshoot?

Please shed some lights for me?

Thanks a lot.

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