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Can connect to router but not internet, can ping IP but not name

Last response: in Wireless Networking
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August 29, 2012 1:50:03 AM

My client has a ~6 year old dell xps which up until about two weeks ago connected to the internet fine with a netgear usb wireless adapter (it is a desktop). When that stopped working, she ordered a Rosewill RNX-N300X (my suggestion) and I installed it. I got the driver installed and everything, it connects to the router without a problem. Her laptop also connects wirelessly to the router just fine and can browse the web without a problem. The desktop however, even when connected to the router, refuses to access the internet. I was thinking the problem was DNS related because I can ping any ip address in cmd, but can't ping actual websites like google.com or yahoo.com. The problem is, when I manually change the dns servers in the wireless connection properties, it disables dhcp and will not connect to the internet.

Here are the ipconfig /all results for the laptop which works:

Spoiler
Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) Centrino(R) Advanced-N 6200 AGN
Physical Address. . . . . . . . . : 00-23-14-CD-4A-34
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::e4e2:19e:D 2ae:c4cc%13(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.11(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Tuesday, August 28, 2012 9:22:17 PM
Lease Expires . . . . . . . . . . : Wednesday, August 29, 2012 9:28:23 PM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 234890004
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-A5-05-53-88-AE-1D-44-47-C

DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled


And for the desktop which does not work:

Spoiler
Ethernet adapter Wireless Network Connection 7:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 802.11n Wireless LAN Card
Physical Address. . . . . . . . . : 00-1A-EF-27-17-6F
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.1.4
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.1
Lease Obtained. . . . . . . . . . : Tuesday, August 28, 2012 9:37:13 PM
Lease Expires . . . . . . . . . . : Wednesday, August 29, 2012 9:37:13 P
M

It is also important to note the following:
- I tried the Rosewill adapter at home on my computer, works like a charm, no hassle
- The XPS desktop is running Windows XP
- It does not appear to have ipv6
- I am using wpa-psk with tkip
- I am using the drivers on the disk
- McAfee says there are no viruses
- Tried reflush/register dns to no avail
- Tried ipconfig release/renew as well
August 29, 2012 4:43:50 AM

have you tried to disable the firewall on the computer?
August 29, 2012 2:14:48 PM

Is this a work situation? Because it’s possible (if unusual) an employer might block outbound access to the internet except for authorized devices, which might be based on MAC address. Or perhaps based on IP, but now the new adapter’s MAC address has changed the IP assignment by the DHCP server. If you think this might be a possibility, or even as Emerald suggests on a local firewall, you might try cloning the prior working adapter's MAC address to the new one, just to see if things change for the better.
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August 29, 2012 9:17:36 PM

eibgrad said:
Is this a work situation? Because it’s possible (if unusual) an employer might block outbound access to the internet except for authorized devices, which might be based on MAC address. Or perhaps based on IP, but now the new adapter’s MAC address has changed the IP assignment by the DHCP server. If you think this might be a possibility, or even as Emerald suggests on a local firewall, you might try cloning the prior working adapter's MAC address to the new one, just to see if things change for the better.

It is at her home, and Emerald the windows firewall is disabled. I will disable McAfee firewall and see if that works.

Best solution

August 29, 2012 9:31:01 PM
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you might even have to uninstall McAfee completely and reinstall it
August 30, 2012 12:45:19 AM

Best answer selected by yankees1327.
August 30, 2012 12:46:01 AM

Emerald said:
you might even have to uninstall McAfee completely and reinstall it

Worked, thanks! :bounce: 
I feel stupid for never thinking to try that. I guess my brain was fried with Ip/Dns crap.
!