First of all, please, DO NOT cross post. Many of us look in almost all forums so if you post on only one, you will get the answer.
Secondly, you need to check what is your NIC card. Most of us do not specilized in HP hardware so that we may not know exactly what NIC your specific model use. You will have to figure out what NIC model is and we may be able to point you to the right direction.