You don't need the keys. They are embedded in the motherboard. Since your machine came with windows 7, then it MIGHT ask you for windows 8.1 keys during installation. Then you will need to find the default installation keys to install windows. Were you able to get into recovery and utility? Maybe the discs aren't bootable? I didn't get them so I don't know how to work them. Re: Windows 8.1 clean install with Windows 8 OEM k... - HP Enterprise Business Community This is the guide I wrote for the HP elitebook revolve. Same steps just a few changes. (Maybe I'll make some new steps for it.) If you want to install windows 8.1 on GPT which is the factory default, then you need to download rufus to create a bootable usb using GPT. You also need to download an ISO for windows 8.1. There are a few websites that show you how to download it but the way I did it was to download it from windows using a win 8 CD key. I would recommend that you save your product key by identifying it using this program. Belarc Advisor - Free Personal PC Audit, for software, hardware and security configuration information on your computer. Software license management, IT asset management, cyber security audits, and more. I always recommend people to use a clean install so that you can basically recover the program with all apps and settings in tact. I hate having to install all the programs again and again so having a custom image allows you to skip those steps. I use easeus to do. There's a free version that works just fine. Differentiantial backup allows you to make small back ups from the last time you made a backup so it doesn't take up so much space. If what I rambled wasn't clear, please ask away.