problems with comcast modem

[kadillak33]

I have recently signed up with comcast and our relationship has started out pretty bad. I was wondering if there was a reason why my computer will not detect the modem via ethernet or usb. I know the modem works because I can connect a ethernet to my xbox 360. Please let me know what I can do ASAP thank you!!!

[simpswr]

and welcome to the Forum

How did you connect before you got the Comcast modem? . . you may have some old settings that need to be changed.

Have you tried powercycling the modem?

[kadillak33]

I was connected the same way before. I recently moved and switched from charter to comcast but the modems look nearly identical. And yes I have tried powercycling.

[simpswr]

I've not worked with Charter . . do they require a logon and password? Your router may be doing that for you and it is not needed with Comcast

[kadillak33]

I have a completly different router leased from comcast. But charter did have a username and password but u didn't have to use it everytime u signed in like a dial up connection

[simpswr]

Did you have a router with the Charter connection? are you using one now?

The Comcast modem will not allow internet sharing between multile pc's . . you need a router for that.

[kadillak33]

Sorry about that I meant modem not router. I don't have a router yet....do you think that if I ran a ethernet from a router to the pc that would solve my problems?

[simpswr]

Probably not if it will not connect when directly connected to the modem.

Try this: With the pc connected to a freshly powercycled modem and pc, ( Turn off both, turn on the modem and let the lights stabilize, then turn on the pc )

Click on Start . . Run . . type CMD

At the > prompt type type the following command: IPCONFIG /ALL


Note that there is a space before the /ALL, but there is NOT a space after the / in the following command.

Right click in the command window and choose Select All, then hit Enter. Come back here and Paste the results in a message.

If you are on a machine with no network connection, use a floppy, USB disk, or a CD-RW disk to transfer a text file with the information to allow pasting it here.

[kadillak33]

Im on a phone posting right now...its the only access I currently have to the net... but ill post what I believe is important:

Primary dns suffix:
Node type: hybrid
Ip routing enabled: no
WINS Proxy Enabled:no

Ethenet adapter local area connection:

Media state: media disconnected
Descroption: realtek rtl8139/810x family pci fast
Ethernet nic
Physical adress: 00-0d-61-43-B6-3C

Ethernet adapter Local Area Connection 4:

Connection-specific DNS suffix:
Description: motorola SURFboard USB gateway
Physical adress: 00-23-74iBBiDF-72
DHCP Enabled: YES
Autoconfiguration enabled: Yes
Autoconfiguration IP Adress:169.254.117.226
Subnet Mask:255.255.0.0
Default Gatewy: 169.254.117.226
Sorry if that was confusing...

[kadillak33]

Can anyone help?

[Karin048]

I am having the same problem with comcast. They told me it was my computer, but I bought my computer new from Dell. I am going to have to go back to Qwest. I never had a problem with Qwest, with the exception of their billing dept. I was told to get a USB to Eathernet Adapter, but for a week now I am unable to find one.
Let me know if you figure this out.
K

[simpswr]

The modem is not passing an IP address 169.254.117.226 is a default address.

You seem to be using Local Area Connection 4 . . in Network Connections, how many Local Area Connections do you see?

Try this . . In Network Connections, delete all the Local Area Connections . . then in Device Manager, remove the Network Adaptor. Reboot to let Windows "Discover" the Network Adaptor and load the drivers.

Reboot again and try the connection to the modem

[kadillak33]

I had the original local area connection and then the local area connection 4. When I went to reinstall the driver it came up as local area connection 6 and said it has limited or no connection. im really confused and am starting to get frusterated. Thank you for all of your help though. Any other suggestions?

[simpswr]

Did you delete them all and start over?

[kadillak33]

Yeah I did

[simpswr]

Now do this again

Originally Posted by simpswr

Probably not if it will not connect when directly connected to the modem.

Try this: With the pc connected to a freshly powercycled modem and pc, ( Turn off both, turn on the modem and let the lights stabilize, then turn on the pc )

Click on Start . . Run . . type CMD

At the > prompt type type the following command: IPCONFIG /ALL


Note that there is a space before the /ALL, but there is NOT a space after the / in the following command.

Right click in the command window and choose Select All, then hit Enter. Come back here and Paste the results in a message.

If you are on a machine with no network connection, use a floppy, USB disk, or a CD-RW disk to transfer a text file with the information to allow pasting it here.