Your PC is getting the IP address your cable company is sending you. So when
your roommate connects it won't work because its not the same PC. I would
purchase a Linksys router and then you just have to plug a cable in to the
router when ever you want and your on, no problems. Better yet a Linksys
Wireless router then you can do it from anywhere in your Apt.

Good Luck

"mike" wrote:

> sounds like cable company is blocking your signal your computer is the one
> they have registered or the one they first installed .i live in iowa and
> mediacom cable has done that to me they wanted five dollors amonth per extra
> computer .do a ip release then shut down unplug cable modem and router then
> when you restart plug modem and router back in
>
> "Qnguyen" wrote:
>
> > Hi,
> > I applied a cable internet for my appartment. They send me a cable modem. I
> > connect my laptop to modem and browse the internet without problem. The
> > problem is if my roomate try to use her laptop, She has to reset the modem
> > (turn off 1-2 minute and on again) to get it work, and then if I use it I
> > have to reset again.
> > I also try to connect another router to this modem for all of us but noone
> > able to get to the internet thru the router which connect to the modem.
> > Is there a way for us to able to connect to internet without reset the modem
> > (just plug in cable and use).
> > Why do we can not use internet the same time thru the router even the
> > connection status show very fine( Packet sent and received over thousand)?
> > I am very appreciating for your help. Thanks