I got this Thinkpad X220 from last Sunday and the keyboard was fully functional, none of the key were not working. But this afternoon after I replaced a new palm rest and giving the machine a clean, the red circled section of the keyboard just stop working. So I recheck the keyboard connector, unplugged and try it again, this time it extended to the blue area, including the space bar also not working at now. Is there anyway to fix this issue before I buy a keyboard replacement?
Also the external keyboard does not work until the OS is booted into, so its seem that I cannot access the BIOS right now since the Enter key is malfunctioned.