Yes, it sounds like you are havoing trouble with the NIC (network interface card). It might be that Linux does not support it, it might be something else (see my last post). I have real doubts that it's a Linux support issue. You don't seem to be saying what your interface is, if you would tell us someone likely would know if LInux supports it. (If you don't know you should be able to get to information from Windows->control panel->system->device manager->network adapters)

You might also just try putting another NIC in, they can often be had for $5 or free after rebate at OfficeMax, Staples, CompUSA and similar stores. But if you are running something that disabled the last NIC then this might be a temporary fix until it happens again.