15 Replies
      Latest reply on Sep 11, 2017 11:58 AM by vikram820
      vmanikandan Level 1 Level 1 (0 points)

        Running macOS Sierra V10.12 on mid 2014 MacBook pro, when I connect my HP 27xw monitor MacBook screen keeps on flickering and external display says "check cable" I tried connecting other laptop to my external display and it works fine.

        The problem started happening after I installed macOS Sierra.