I got a HP ProBook 4445s from a friend to repair, the hard drive went out and I replaced it....after installing windows 7 home premium I tried to install the drivers....windows update managed to install some of the updates. not one of the drivers from hp will install on this thing...it will start and then just close out of nowhere.....I then installed the amd driver for the apu and after it installed..I got a message saying that my plugged in graphics device was uncompilable...to please unplug it. I still cant get the wifi or ethernet to work. anyone ever here of this or know how to get the right driver?