I was surprised when Windows 10 was being uploaded last Thursday morning. I was still not sure about 10 and decided to stay with Windows 8 so I declined the upgrade. My Dell started to reload 8. I shut the system down and found out that my unit is now not working. I did not download the Windows 8 disk when I got my Dell and it is out of warranty. I have a friend that works with Dell and he gave me a recovery disk. I can now boot up to the advance options mode. However it will not recover as I am getting either a hard disk lock and or a disk partition error. When I try to do a complete 8 reinstall from the disk it requires a key. My Dell did not have the key listed on the box as I have been told that it was loaded to the bios on the mother board. Dell support has been no help as they had me run a diagnosis and all checked out. They told me to run the reinstall from my recovery disk. When it asked for the key they said my hard drive must be replaced?