A website that will not load on a particular computer? Help Me Please!

[RobertFisher]

We took on a new client about two weeks ago, took them off a proprietary CMS, placed them on a WordPress site, optimized the site, etc. and were finishing up small details three days ago. My PC in my personal office all of a sudden would not load the site from a Google search, from a direct url, etc. 
Our office was using a D-Link wireless router but my PC is hardwired in the office. I cranked up my MacBook Pro with solid state drive (6 months old), got on wireless, and....site would not load. PC's and Macs in offices around me would all load the site.

A search online brought up a fix for the PC and tried it - did not work, had lead dev try it - did not work, called a server side friend and he had never heard of such a thing. Every fix revolved around changing IP addresses, etc. I uninstalled my antivirus programs on my PC, installed every update that was outstanding, there was no new software installed on either box prior to problem.

Can you help??? Is there any chance someone not associated with us and just looking for my client or someone entering a direct url could experience?

[AlanMosley]

When you say does not load what does happen?
can you PM a url to me?

Can it be loaded from outside office?

[DougRoberts]

Are other sites loading normally?

Can you resolve the host name from a command window on the PC:

nslookup {hostname}

If you can't resolve the hostname then it's probably a DNS issue. (you could try adding an entry to your hosts file and see if that gets around the problem?)

[stevecounsell]

Different computers on the same network / IP segment not loading the site could be a Proxy server OR DNS Setting.

I'm on Mac so that's what I know about.

What are your Mac network settings?

Do you get an IP address?

Can you load other websites from the same virtual hosting server?

Can you load the website via the IP address?

Whats the URL of the website?

Steve

[RobertFisher]

Will PM the URL to you Alan. thx

[AlanMosley]

Did you try nslookup as Doug suggested? from pc

[RobertFisher]

Thanks Doug, I will check with Lead Dev as I know he worked on it for about 30 minutes in the command window.

We changed IP addresses, etc. to no avail.

[AlanMosley]

Rob, you will need to do the NSlookup on the PC with the problem.

It may be that other un-affected machines got dns cached, and will eventualy have same problem.

[EGOL]

Disable firewall or antivirus for a moment and try visiting the site.  My firewall blocks a couple of sites or makes them perform poorly.

[RobertFisher]

Thanks EGOL, did both and no good. Completely uninstalled AVG. Disabled windows firewall. Still no good. Only thing online is fix for Windows (I use XP pro on that mach.) and even that did not work. ???

[RobertFisher]

Think it is around proxy srvr / DNS setting Steve. Tried changing based on a fix for XP but to no avail.

Mac is working from out of office and will recheck in an hour or so at office. (OMG, working on Sat again).

Thanks for help.

[RobertFisher]

Thanks Alan, 
Will try that when I go into office in an hour or so.

[AlanMosley]

Ok will be working till late so let us know how you go.

[wojkwasi]

Can you get to it using a proxy service like proxify.com?

[RobertFisher]

Yes, Woj, we were able to get it from other PC's in the office. But good way to check, thanks.