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You can download the LAN and device drivers from the Compaq/HP WEBsupport/download page. Make sure you select your model laptop and the Windowsdrivers you require and install them. Click on this link to download thedrivers: - www.compaq.com/country/cpq_support.html
Because the power jack is soldered directly to the motherboard, side to side stress on the plug over time damages more than the solder joint, it also loosens the little copper sleeve that lines the hole in the motherboard. Simply resoldering the joint only cures the problem for a month or so. You must remove the plug, wrap and then solder a thin piece of wire clipped from a small resisitor lead to the base of the center pin connector leg (the one to the back of the jack) and pull through the board with the leg. Then the extra wire is bent over like a hook and coiled around the spot -- squashed flat. then the coiled extra wire acts as an added anchor when soldered (hooking the power jack connector to the board.) this joint will survive like or even better than new. Not doing this added step gaurantees you joint repair will fail not long after it is made.