Windows 7 key
I recently had my Dell Inspiron 3542 crash. My issue is that it came with Windows 7. However, the recovery disk that came with the computer is for Windows 8.1. I researched a bit and found that I could create a recovery disk through Dell by using my service tag. I did this on a USB on my other computer and reinstalled Windows 7. Now I am getting the pop up saying my OS is not genuine. I have no key for this and the sticker on the computer is also Windows 8.1. Please help.