im trying to setup up a home network between my dell and my compaq, already set the dell up with no problems but when i tryed to set my compaq up it says that there are no network cards connected even through there is one connected because i went into device manager and it is on the list and doesnt have any problems it says This device is working properly .i have tryed updating the driver with no luck.what could be wrong with it, also had some problems with my moniter it kept on showing black lines when i was watching dvds and videos have fixed that problem but every few seconds lines keep showing up along the bottem of the screen. can help any1