Internet connection issues

[NOX]

Hi my ex has got a huge problem with her internet which I have spent 2 days looking at to no avail. She can connect to the net okay via her Dlink 2640r router and surf the net fine BUT cannot log into any game servers. I checked the ports which were allegely forwarded in the router and windows firewall was allowing the programmes through- so the set up looked fine to me. The IP is by default dynamic and has been working fine til yesterday- no new installs or downloads, it just stopped working. I changed the IP to a static one and re-forwarded the ports but still the same, so switched it back to dynamic, still the same. Tried disabling the firewall completely- still the same. Ran a router diagnostic and got a fail on pinging the gateway and also the primary DNS. I am at a slight loss now and would welcome any suggestions from folk far more knowledgeable than me.
Cannot connect both PC's and Xbox's to any qame servers at all- all other internet seems fine.

Many thanks in advance.

[NOX]

Hi chuck sorry I phrased that badly- that's the IP it comes up with in 'Port Forward Static' as the suggested one- it does indeed need to be typed in. I have tried it both as that and with the router default, still the same outcome with both.
Having just done an ipconfig /all I've just noticed something weird. The adapter is saying it's an NVidia ( which is fitted but not connected to that firewire) but actually the Lan is set up via a Yukon which the cable is attached to. Anyway here's the ipconfig /all.

Very much appreciating all your efforts both of you by the way.

C:\Users\User>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : User-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection 2:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Marvell Yukon 88E8001/8003/8010
it Ethernet Controller
Physical Address. . . . . . . . . : 00-13-D4-EA-F0-31
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::a4ca:eb9b:aa26:7c6%11(Pre
IPv4 Address. . . . . . . . . . . : 192.168.1.51(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.50
DNS Servers . . . . . . . . . . . : 62.24.243.1
62.24.202.6
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : NVIDIA nForce Networking Contro
Physical Address. . . . . . . . . : 00-13-D4-EA-E8-65
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 6:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.{6212A7AA-43EB-47FE-95DB
084}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 7:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 11:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interfa
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:5ef5:73b8:429:3422:3f57:
rred)
Link-local IPv6 Address . . . . . : fe80::429:3422:3f57:fecc%13(Pre
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Local Area Connection* 15:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 6TO4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 17:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 6TO4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

C:\Users\User>

[NOX]

Sorry scrub that about the Nvidia thing- misread the window.

Thanks:)

[NOX]

Hi Methyl, with regards to Ipv6 to my knowledge there's nothing running that would need that, so no.
The Ip and mac are as follows for this computer...

192.168.1.109

00:13:D4:EA:F0:31

I ought to mention that I returned the IP address to dynamic earlier as well since static didn't seem to be any benefit whatsoever.

[NOX]

Hi a big thanks to everyone who answered, particularly Methyl and chuck for their undying patience, thank you very, very much. We have finally got it sorted out. The idiot service provider who had sworn it was not them, phoned today to apologise for the fact that they had placed a restriction on my ex's account in error, despite the fact that we have called them no less than 6 times about this;/ Anyway, all back working perfectly normally now, but thanks to everyone who tried to help, Talk talk are really quite unbelievable.