Can't boot into windows 8 (black screen)

Question

Dear All&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;Background:I am using a recent macbook pro 15" retina.I have installed windows 8 via bootcamp.I have installed parallel desktop and loaded the windows from bootcamp.The combination has been working fine for few months now.I can boot into wins 8 using both ways: bootcamp or parallel desktop.Problem:Until yesterday night, after using the windows in parallel desktop,I rebooted my mbp, held down option key, selected to start windows 8.After a "circle dot" loading screen, the screen remains black forever.I could do nothing but manually turned off my mbp using the power button.Significant behaviors:While I can&#x27;t start win8 using bootcamp,I CAN STILL boot into win8 using parallel desktop in mac osx.Uncertain factors:I realized that i had my sdcard plugged in my mbp when using parallels (dun know if it &#x27;s related)and i&#x27;ve removed it but it doesn&#x27;t change anything.&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D; &#x3D;&#x3D;Does anyone have any ideas or similar experience to share?

Loner T · Accepted Answer

1. Do you have Automatic Windows Update turned on?2. Parallels creates its own BIOS environment to boot a BC/WIndows partition. It indicates that the underlying BC/WIndows partition is intact.3. Do you have any third-party NTFS software?4. Were there any Software Upgrades/Updates applied on the OS X side? What is your Mac year/model?5. Has there been any partitioning/resizing activity of either Windows or OS X by any tool?6. Can you post the output of the following OS X Terminal Commands?     diskutil list     diskutil cs list     sudo gpt -vv -r show /dev/disk0     sudo fdisk /dev/disk0     Please enter you password when prompted, it will not be echoed back to you. "sudo" may also warn you about improper use and data loss.

siriusfromnull · Answer

Thank you very much for your reply. The case can be closed.I kinda &#x27;solved&#x27; the problem by simply starting the system after 2 days, without any specific actions.