You can order recovery media for your from the HP Pavilion g7-2275dx Notebook PC [http://support.hp.com/us-en/product/HP-Pavilion-g7-2200-Notebook-PC-series/5296086/model/5336992|product page].
Choose '''Software and Drivers'''
Then '''Option 2: Go directly to the software and driver results'''
There will be an option to Order Media/Recovery DVD/USB.
Select the operating system that came installed on your notebook and it will provide you with the order form to purchase the recovery media.