I have Dell Inspiron 13 7000 series laptop, recently I came up with having trouble with the keyboard, it behaves oddly. The "tab" key acts as windows key, "windows key" acts as "letter v" key..some keys are not working at all.. The behavior that I found is , every time I update BIOS with the update from Dell Site, the keyboard starts working..but the next day (shutting down and accessing the system the other day), the same thing happens. I have to re-update the BIOS to make the keyboard work