A:AnswerI ordered my Asus with Windows 7 preloaded because I couldn't stand Windows 8/10. I would "suspect" that your machine originally had Windows 7 loaded on it and it was later upgraded to Windows 10.
A:AnswerI found the same problem and it is annoying. Usually I try out the computers in the store first but none was available in the store and I waned one with Windows 7 Professional and not Windows 10 -- so I wasn't aware of the computer not having any keyboard lights.
A:AnswerI'm pretty certain it does NOT have an open bay for a second drive but the other answer is incorrect. It DOES have an optical drive and I'm pretty certain there is an open slot to add 2nd stick of RAM. The HDD can be replaced with SSD. There are youtube videos for both these things.