Purchased a Lenovo x120 about 9 month ago. The minute I got it, replaced the HDD with SSD and upgraded the memory to 4 gb. Been fairly happy with it, until 2-3 weeks ago keys (mostly: n, b, space) started malfunctioning or became a pain to work with.
Had to take out the keyboard, shown as below. The x120e keyboard pops up about the same way, but it gave me a bit more struggle to pull it out. I was almost scared I broke the keyboard when it finally came out. Reseed the keyboard connection back into the motherboard, and all is well with the world again