[bc818]

I have a linksys cable modem and router. The cable jack is plugged into the modem and the router sits on top of the router. They both sit next to our "upstairs" computer. (This computer is primarily used for gaming, so we wanted this computer to be directly wired into the router for better response times.) Our "downstairs" computer connects wirelessly (again, linksys wireless adapter)

It was working great for more than a year but now the "upstairs" computer is losing its connectivity. It is constantly losing its connection and disconnecting from the internet, which is very infuriating in the middle of a game.

At first, unplugging and replugging the modem and router were working but not anymore. Now it wont connect at all. The funny part is I still have an IP and DNS when i use ipconfig from the cmd prompt. When I ping or use tracert I get no reponse. The downstairs computer is working perfectly fine, which is allowing me to post this. (Which means the modem and router are still working fine!)


I've tried everything for the upstairs computer and I completely stumped. I tested the wires, but all the lights come on and respond appropriately. I've reset the router to its factory defaults and reinstalled my browser, Firefox, all to no avail. I've unplugged both and held the reset buttons. I've checked for viruses using AVG and spyware with SpybotS&D. I even tried taking the cable wire and connecting it directly to the computer but I still cant access the internet.

Please help! I'm completely stumped....
Thanks,
Brian

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Hiya bc818, welcome to GTG!

Possibly you have an issue with the NIC (Network Interface Card) on the upstairs PC. They are a dime a dozen nowadays, so I would give that a crack. (If you choose this option, and you have onboard NIC, go into the BIOS on boot and disable it)

Keep us posted!
Be well,
SoccerDad

[SoccerDad]

Hiya bc818, welcome to GTG!

Possibly you have an issue with the NIC (Network Interface Card) on the upstairs PC. They are a dime a dozen nowadays, so I would give that a crack. (If you choose this option, and you have onboard NIC, go into the BIOS on boot and disable it)

Keep us posted!
Be well,
SoccerDad

[bc818]

Please specify. How do I access the BIOS? The only external hardware I have is the modem and router, so I must have an internal NIC. How do I disable the NIC once I'm in the BIOS? Also, does this mean I have to buy one from a store and manually install immediately after I disable the current NIC?

[bc818]

Also, I'm not that great with hardware. Everytime I experiment or feel aqdventurous I end up doing way more harm than good. Before I go to all the trouble of opening the box and buying the NIC, is there an easy way to reinstall the existing drivers or ip protocol to ensure that my NIC is broken ?

Thanks!
BC

[dsenette]

on the desktop connected to the router do
start > run > cmd > ipconfig /release
then
start > run > cmd > ipconfig /renew
(the second command can be run in the same command window as above the beginning portion was repeated so that there would be no confusion as to where to type it)

any errors with that? does the connection become active again?
do
start > run > cmd > ipconfig /all
and post the results

[bc818]

Microsoft Windows XP [Version 5.1.2600]
© Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Brian>ipconfig /release

Windows IP Configuration


Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
IP Address. . . . . . . . . . . . : 0.0.0.0
Subnet Mask . . . . . . . . . . . : 0.0.0.0
Default Gateway . . . . . . . . . :

C:\Documents and Settings\Brian>ipconfig /renew

Windows IP Configuration


Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : dc.dc.cox.net
IP Address. . . . . . . . . . . . : 192.168.1.101
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1

C:\Documents and Settings\Brian>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : bchome
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : dc.dc.cox.net
Description . . . . . . . . . . . : Intel® PRO/100 VE Network Connect
on
Physical Address. . . . . . . . . : 00-07-E9-CD-07-7E
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.1.101
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 68.100.16.30
68.100.16.25
68.9.16.30
Lease Obtained. . . . . . . . . . : Monday, June 19, 2006 7:01:11 PM
Lease Expires . . . . . . . . . . : Tuesday, June 20, 2006 7:01:11 PM

C:\Documents and Settings\Brian>


==========================================================

Here's the ipconfig post. Still no luck with the upstairs computer. Downstairs computer works fine. Is there something silly I missed? Thoughts? Any assistance you could provide would be greatly appreciated. Thanks.


Brian

[dsenette]

if all of that was from the upstairs computer...then it should be connecting...it's getting an address...so it's talking to the router...is there a firewall on this contraption?

[bc818]

No, I dont believe so. The chcekbox on Windows > Network Connections > Local Area Connection > Properties > Advanced > is unchecked. Is there another place to turn a firewall on? Whats the next step in troubleshooting? Please advise. Thanks.


Brian

[dsenette]

any chance of connecting this computer directly to the modem?

[bc818]

Yes, I tried that over the weekend and still got no response from Firefox. I subsequently uninstalled and reinstalled firefox and tried it again. What does that leave me with?

- Evaluating the NIC card
- Reinstalling the protocol/drivers
- BIOS
- Registry


....... I have no experience with any of those. Thoughts? I appreciate the help because this is bugging the [bleep] out of me.


Brian

[dsenette]

does internet explorer allow you to connect to the internet?

plug the desktop (upstairs computer) into the modem...turn off the pc..and turn off the modem.....turn the modem back on...wait for it to come all the way on...then turn the computer back on...try both IE and FF to get online

[bc818]

I wont be able to try the specified sequence until late this afternoon.

Brian

Edited by bc818, 20 June 2006 - 08:55 AM.

[dsenette]

and that's all directly connected to the modem right?

Please try WinsockFix. Once run, reboot and test your connection.

If that fails, please goto Start, Run, type CMD, press 'OK', then type the following commands:

• netsh winsock reset catalog
• netsh int ip reset reset.log

Reboot and test.

[bc818]

THANKS!!!

I used "WinsockXPFix". I read the instructions and your instructions matched that Win 2000 version. For XP, all I had to do was double click "WinsockXPFix" and reboot. Very easy. (More directions and info came with the file.)

Thanks for all your help!

Brian