Some of the keys on my Alienware 15 R3 laptop aren't working, what should I do?

I recently bought an Alienware 15 R3 laptop (2016). It worked perfectly fine when I used it for the first time, but I had to replace the battery since it wasn't holding a charge. After I replaced the battery, some of the keys on the keyboard stopped working ( T , P , 3 , 4 , 5 , 3 , 9 , . ). When I just pressed random buttons on the keyboard, some of the keys started working again. Then stopped working after 1-2 minutes. I tried deleting and reinstalling the keyboard drivers, but that didn't work. The USB keyboard and on-screen keyboard both work. I may have to go back and check and see if I d

Question by Brandon on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.