Not sure of the model, I think presario. I have not tried another ethernet card. When i first hooked it up it would not work with the ethernet, so I used the usb. When I got my new computer i found out the ethernet port on the modem was the real problem. I have tried different cables, no difference. Correct, as soon as i unplugged it the computer booted up perfectly with never locking up, of course their is no internet. When I first switched to the ethernet it worked. If i went on the internet it would lock up after a few minutes, but if I stayed off the internet it would work fine. Just recently it would lock up just sitting there with the desktop showing. I was debating on whether to get the new ethernet card or just get a wireless usb adapter and go that way. I was hoping someone would know an easy fix, because I don't really want to put too much money into it.