Cable modem works when connected to router, but not when connected to the PC

MikeHunt79 · 21 May 2007 at 12:22

Why is this?

I keep getting "limited connectivity" when I hook the modem directly to the PC.

I've tried USB and ethernet, and both give exactly the same problem. My ISP is virgin, fwiw.

wesley · 21 May 2007 at 12:24

you got "obtain an IP addresses automatically" ticked?

MikeHunt79 · 21 May 2007 at 12:42

Werewolf · 21 May 2007 at 13:06

Are you turning the modem off for a minute after disconnecting it from the router, and waiting for it to sync before connecting the PC? (if you don't reboot the PC you will need to open a dos box and run ipconfig /release, ipconfig /renew).

Avalon · 21 May 2007 at 13:07

When swapping from one to the other you *must* power cycle the modem, if you don't you have the symptoms you describe.

vespr · 21 May 2007 at 13:58

I use to have a problem whereby you have to register the PC's Mac address with the provider before connecting it to the modem otherwise it wouldn't provider Internet. If you've previously used your router, then it's registered that Mac address. Try calling them up (Virgin... NTL/Telewest) and explaining that.

Werewolf · 21 May 2007 at 14:02

You don't have to do that with NTL (and haven't for a fairly long while

) for standalone cable modems, i'm not sure about BY (or their respective VM areas).

I think they both work by the modem's mac address these days

Avalon · 21 May 2007 at 18:08

It stopped on exBY area's years back, a power cycle is all that's needed.

MikeHunt79 · 21 May 2007 at 18:47

Ok, I'll give a power cycle a go. Hopefully that should sort it. Thanks.

DarkShadow · 21 May 2007 at 23:33

I have the same problem it seems

http://forums.overclockers.co.uk/showthread.php?p=9315271#post9315271