I see that some of the SP4 users experience this issue with the touch screen. Except that mine is completely unresponsive, not just time to time. It doesn't even respond to the pen input except for its eraser button on top, so i know BT isn't a issue. Reboot / restore / update doesnt resolve this issue with my SP4. First couple of days my SP4 worked just fine with no issues regarding the blinking display or wifi as some people report them. But suddenly on the 4th day after a windows update, my tablet computer became a laptop, well still a fancy one with a detachable keyboard. At this point, I've tried all of the usual methods, applying the lastest windows updates, wiping and restoring it and so on. I even manually removed drivers of what seemed to be touch-related devices and re-installed with the drivers ive found from here (Download Surface Pro 4 Drivers and Firmware from Official Microsoft Download Center). I did find a guy on youtube experiencing the same exact issue as i () , which somehow made me feel im not alone in this mess. But no solution yet. I would return my SP4 and possibly get a replacement but the local vendor(the official MS store in Korea, there is only one of them) says they are out of stock and i need to wait for about a month. Is anyone going through the same issue as i am?