Mysterious Problem

Our family has recently signed up to play Disney's Pirates of the Caribbean Online MMORPG game so we would have something to play with the kids, but it works on only one of my four computers. All are Dell. The one that it works on is the oldest. All are hardwired with Cat 5e cable to a home network. None are wireless. The one that works is not the main computer for the home network.

Here are the specs for the one we CAN play on.

Dell Dimension 8300
Windows XP SP2
Processor - 3ghz Intel Pentium 4
Graphics Card - Radeon 9800 128mb
Ram - 1 gig
Hard drive - 150gig (138gig free)
All Drivers are up to date per Driver Detective

Here is the specs for the three that Crash as soon as you click on "Play".

Dell Dimension 9100
Window XP Sp2
Processor - 3.5ghz Intel Pentium 4
Graphics Card - Nvidia 6800 256mb
Ram 1 to 1.5 gig
Hard drives - All over 150 with at least 125gig free
All Drivers are up to date per Driver Detective.

I have changed Modems and Routers, but nothing helps. The answer has to be simple but POTC support hasn't got a clue. All they keep saying is it has to be my ISP. I told them if one runs, they all should run. I even by-passed the router and that didn't work either.
I have uninstalled all my firewalls and virus protection. I also have turned off windows firewall.
The computers that will not play POTC are all newer with next generation graphics cards over the one that will play. And believe me I have all the latest updates on all hardware on each machine. I get a game disconnect and loud crashing sound then a window that says "Your Internet Connectionto the Servers has been unexpectedly broken"as soon as I click play.
I have the Directx 10. I have DirectX 9. Also tried several drivers from the Nvidia archives and nothing seems to work. Just weird problem. Have even changed Routers from Linksys to Belkin. Also changed ISP from cable to DSL. The nVidia drivers are supposed to be next generation drivers from the Radeon driver on the computer that works on POTC.

 

I only downloaded the DX10 on one computer last week as a last resort. knew it was a Vista Program. But when desperate.......
Have tried all computers without any being on the game but still only the oldest works. We should have plenty of bandwith with cable modem.
Maybe something to do with the ports in the router, but I dont know how to add them or disable port forwarding or port triggering to port 7667 as Disney suggested.
Thanks for your help

 

Also, one thing that stands out right away is the computer that runs the game as a Radeon card. The three that don't run the game have nVidia cards.

Drivers?

 

Have the latest drivers for the nVidia graphics cards. The nVidia cards are supposed to be next generation over the Radeon card. Weird problem. Have a feeling it is in the router or modem but don't really know how to check any of this.

 

If it is a router problem then by-passing the router and trying the game on one of the new computers directly connected to the modem may identify that problem not sure if you have done that already.

Also to check and edit settings on the router use IE explorer and go to the router IP address check your user manual before hand you might need password the ip is usually 192.168.1.1 or 192.168.1.2 you can port forward if you want but you can only forward one port to one computer i think so you best bet would to set it to an open NAT type if you want all the computers to run it. I dont know though if that is the problem if the computer is crashing as you say with sounds maybe its simply a graphics card issue.

 

Thanks Bob,
I have already tried all the above solutions. I am now working directly with Nvidia trying to solve the problem. I agree it is a graphics card issue because I have tried everything else. Thanks again.