i format my hp laptop windows 7 prof. i made it ok.but i dont know how to put back all the things specially the wifi connection.
there should be a driver cd with the laptop or a restore cd that put the factory image back on. most new laptop put the restore image on the hard drive. if you blew the image away then on another pc go to hp downloads for your laptop. start with the mb chipset drivers so the usb ports will work. then use a usb stick to download the video. sound and network drivers to the usb stick and then install them. with the laptop online you should be able to install all the drivers you need.