Did you install from the recovery partition?
If yes is there a link in your start menu for additional Drivers and Software installation?
If not make a folder on your desktop of the system you are posting from, name it: HPDrivers
Download Qualcomm Atheros QCA9000 Series Wireless LAN Driver (Network) save it to the HPDrivers folder on your desktop.
The exact filename is SP66873.exe
There is a how to install guide for each, if you need it.
This is the only one necessary for now.
Grab a blank CD-R or CD-RW and burn the file to the disc.
Place the disk into the HP and using Windows Explorer browse to the CD Drive and double click SP66873.exe to install Wireless Capabilities to your HP.
Once you have a wireless connection, download and install security software. (Microsoft Security Essentials, AVG Free, AVIRA Free Etc.*)
*These are only suggestions not recommendations
You can then follow the link I gave you and download / install the rest of the drivers and software directly to the HP laptop.
Then visit and revisit the Microsoft update site and get all updates from there.
Lots of luck and Please keep BC posted.