Please download RWEverything, unzip it, install it, and then run it on the computer in question. Referring to this MDL webpage, confirm that the SLIC version in the BIOS is version 2.1. If the SLIC is v2.1, which is valid for SLP OEM activation, proceed with the following instructions;
1) Download and unzip ABR Beta With Windows 7 Support. Here is the main page to ABR for Windows Vista. Please follow the "How to use it" section for information and instructions on how to use it. These steps apply to Windows 7 as well. Perform the "activation backup" and save the recovered key and certificate in several external locations. Make sure that there is a non-empty cert-backup and a key-backup, and that no errors were returned. (This pulls the original factory HP SLP OEM preinstalled key and certificate from your factory installed OS)
2) Install Windows 7 from your Pro disc or USB stick, following all prompts as needed. Don't allow Windows to try to auto-activate. Run ABR "activation restore" to "install" the previously backed up product key and certificate. Verify that Windows is activated, repeat "activation restore" until Windows 7 is activated. (This "installs" the original factory HP OEM pre-installed key and certificate from your factory installed OS to your clean Windows install. This HP OEM key and certificate is what allows your HP computer to be factory pre-activated.)
3) Install all needed drivers for the computer. These can be found on HP support page for your computer or you can find newer drivers on the various component manufacturers websites... Intel, NVidia, AMD/ATI, Ralink, Realtek, etc
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