My HDD died yesterday so I have to order a new one. I could not back up any files and there is no backup disk. How do i install windows when I install my new HDD? I don't see a key anywhere in the tower or box.
Using another working Windows 7 or newer 64 bit PC and a 32 GB USB flash drive, you can create a bootable USB recovery drive using the HP cloud recovery tool that will reinstall W10, the drivers and the software that originally came with your PC.
Here is an info link for how to use that utility...
Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".