Hi riskio,
The drivers for your HP product are already included in the Windows 7 operating system. There is no full feature software and driver available to download from the website.
With the in-OS driver, some of the buttons on the product do not function and some of the advanced product features are not available, such as grayscale printing. For more information about your in-OS driver, and to see workarounds for lost functionality, go to our Frequently asked questions.
I hope this provides some clarity.