You can't use that wireless card on that laptop because of HP's built-in hardware checking technology which only permits approved internal devices to be used.
What you should have bought is an external
wireless adapter which plugs in to a USB port. Latest ones are "nano" or mini size like this one: http://www.amazon.co.uk/Netgear-WNA3100M-Wireless-802-11b-WNA3100M-100ENS/dp/B008530JPA/ref=sr_1_69?s=computers&ie=UTF8&qid=1397070239&sr=1-69
You won't get the "unsupported device" problem with one of those because it's external.