Can't connect via cable modem on new PC

grimknight21

Junior Member
Mar 16, 2007
4
0
0
Hi everyone,
I'm wracking my brains over this so any help would be appreciated.
I recently built myself a new PC (my last one was 5 years old).
I installed Win XP -X64 as the OS. I hooked up the PC to the cable modem (a Linksys LINKSYS BEFCMU10) and the LAN cable (from a LAN port on the Striker Extreme Mobo) picked up an IP address immediately, and assigned a default gateway, but there was no connection.

Pinging external addresses fails with timeout. Looking at the network properties it seems to generate packets no problems, but it doesn't receive many. I've disabled Windows Firewall to rule out packets being sent to an invalid port number.

I've replaced the cable modem with another one provided by my cable company, used USB rather than LAN connections, both modems MAC addresses being added to the list of allowable devices on our network. All setting are set to automatically detect DNS and proxies as requested by the cable provider.

I've even moved the PC to a location where the network connection was known to be good (beside my old PC). Hooked it up to the modem it's using, and now my old PC can't access the broadband service either, even with a reinstall of drivers.

Anyone who can help shed a little light on this subject would be greatly appreciated.
 

JackMDS

Elite Member
Super Moderator
Oct 25, 1999
29,547
422
126
Might be that your service authenticate with the MAC address of the previous computer thta was used.

You changed computer MAC changed No service.

How to Fix Cable/DSL Internet authentication (password). - http://www.ezlan.net/broadband.html
 

grimknight21

Junior Member
Mar 16, 2007
4
0
0
I'd only thought the MAC address of the modem itself would be important. I'd never considered the MAC address of the PC itself as also being important.

Thanks, I guess I'll need to have another talk with Tech Support.
 

grimknight21

Junior Member
Mar 16, 2007
4
0
0
As an addendum, the MAC address of the LAN card from my new PC was the missing item. I now have full access to the Internet.

Thanks for the help!