I am trying to set up my home PC to a Comcast modem. During the Installation Wizard I receive a message stating the modem is connected but there was a problem with internet connection and it gives the message that the ethernet cable is not connected. I have disconnected the cables and reconnected and still get the same message. MY ISP said that there was something wrong with the machine. I was able to access the internet when my ISP was Verizon, but unable to with Comcast. Should I have a USB, Ethernet and the internet cable connected to the PC? Comcast's technician did not hook my PC or tell me what I would need he just gave me the modem. Even forgot to give me the installation cd. Very stressed and need help!!! Can anyone help me?

If all you have is the modem (no router), all you need to do is connect the coax cable (the "TV" cable) to the modem, connect the ethernet cable from the modem to your computer, and plug in the modems power. Give it about 60 seconds, and you should be connected to the Internet. No need for a setup CD or special software. -Ryan Adams Computer Tips, Guides, Downloads, and more:http://RyanTAdams.com

Reboot the computer as well. Then post back and let us know if it's working. "So won’t you give this man his wings What a shame To have to beg you to see We’re not all the same What a shame" - Shinedown

Thanks for that info. There is what I thought was a splitter (the cable is coming out of the wall into this splitter then 1 cable goes to the modem and one to the tv for cable. I followed instructions I printed off from comcast.net when I was connecting them. So right now from the modem to the pc there is the cable (round black cord that screws on), usb cable (gray), and ethernet cable (yellow and looks like a phone line but bigger). Should I unplug the usb cable?

"from the modem to the pc there is the cable (round black cord that screws on), usb cable (gray), and ethernet cable (yellow and looks like a phone line but bigger). Should I unplug the usb cable?" You should disconnect all cable except the yellow one. I have no idea what you could have screwed the black cable into on your pc. Your pc doesn't have a cable interface unless you have a TV tuner card. If that is the case [you watch TV on your computer] then the black cable should be from the splitter to your pc not modem to pc. Liberal: broad-mindedness, person who favors a political philosophy of progress, reform & protection of civil liberties Neocon: labels others adversely. John Kerry, vietnam vet is a liberal

OK, I unplugged everything that was going from the modem to the pc except the ethernet cable. I was still unable to access the internet. When I checked my connection it showed disconnected.

Do you have a lan interface? Right mouse click on Network Places and go to properties. Do you show local area connection? Who provided the yellow network cable? Does it say Cat5 or other markings on it? I am curious as to why the comcast tech didn't set you up? They usually have to register the modem with the central office and they test your internet connection by going to your comcast web page which is where you can setup your email account. Why didn't this happen since this is standard operating procedure? Liberal: broad-mindedness, person who favors a political philosophy of progress, reform & protection of civil liberties Neocon: labels others adversely. John Kerry, vietnam vet is a liberal