15" Macbook Pro Touchbar 2016 Radeon 460. I had this symptom happened almost every weekend. One pattern i found that it happens after i close the lid (sleep) without shut down. Next time i open the lid, the error comes again (no touchbar lit emerges). a. Computer start (opening lid) b. Weird thing happens, when usually the touch bar is lit-up within just few seconds (while apple logo is loading), now its not. c. The boot up time takes much longer than usual. d. After that there is a screen pop up said there are critical update needed. e. After downloading it, it just keeps re-downloading. f. And it just give up, giving me choice to "Shut Down" or "Retry" in infinity. For a USD 4.000 laptop this is a shame and unacceptable. Time Machine comes in handy but it just become time consuming and annoying.