I Found windows 8.1 build 9600 on the lower right of the computer screen. I have no idea why and I can't get id of it. However I tried to activate windows 8.1 but it would not activate, and I never deactivated it. How do I get windows to activate? and why did it deactivate in the first place? Has anyone gone through this before, and are there any solutions? Windows was already installed when I purchased the computer and there was no key code attached to computer or paperwork.