Area-51m, keyboard not working, lights are working

So I am on my second laptop and my keyboard lights are working (sometimes they are on and sometimes they are not) and the only way I can use this system right now is through an external keyboard. The first laptop I had did the same thing but they sent me a brand new laptop beginning of November as a replacement (they thought I had a faulty keybaord) but guess what a month later (December it started doing it again). This time I removed the alienware command system and redownloaded it and my keys started working again. That worked for a few times but now my lights work but the response in the keys do not. Iv been meaning to get IN contact with support but I'm just to busy to fool all with this right now. I don't think I have a faulty keyboard. I think it has to do with the command system. I have reinstalled windows twice since then (one time it worked but only lasted for about a week and the other time it did not work) and did all driver updates which seemed to do nothing.  Very upsetting for the price of this system. What is my alienware R17 (2014 model) lasted for 5 years and not a single problem.