The caps lock key lights up when it is locked. I never type in the dark but I don't think it does, not like my kindle does but that is part of the screen. I turned off the light just now to see but just the light reflected from the computer screen hitting the keys. Sorry I can't be of more help.
Not exactly a gaming computer, but for basic gaming it is fine. If you play Minecraft or League of Legends, it runs wonderfully. As for everyday internet, this machine is excellent. It is rugged, reliable and fast. For what is supposed to be a "budget laptop", it doesn't behave like one. GREAT value for the money. I went back to Dell after trying out an ASUS, and I am glad I came back.
The notebook is very light weight, I would say maybe 6lbs. I took the one I purchased and for an extra $38 purchased another 4GB of RAM just to give it more power, remember that the processor is not the high powered one but, for the price, it's good with what I needed for the extra one.