AnsweredAssumed Answered

2017 iMac Radeon Pro 560 won't boot into Windows 10 with external monitor attached

Question asked by arlencarey on Jul 12, 2018
Latest reply on Jul 13, 2018 by pokester

I am running bootcamp and windows 10 on an 2017 iMac 21.5 inch with Radeon Pro560 graphics card.  If I boot on the MacOS side, everything is fine.  When I try to boot on the Windows side with the monitor attached, Windows chokes and won't fully boot up.  If the external monitor is not attached, Windows 10 boots fine.  If I hotswap the monitor to the iMac after Windows boots up, it eventually will be recognized and function.  What is causing this problem?  How can I fix it?