Although I never experienced this myself since I didn’t use UEFI or secure boot until just now. I investigated about black screen problems and found some solutions related to setting permissions again to fix it. I already fixed it in upcoming OS X Mavericks Transformation Pack 3.0 so you shouldn’t need to worry about this issue after installing it but for some people who are experiencing black screen problems, this article will provide you step-by-step solution to fix it.
I thought using PendingRenameFileOperations will no longer require modifying system files’ permission but it appears to have some conflicts in some cases starting from Windows Vista with new permission changes. I haven’t heard of Windows XP users getting black screen but if you do, you can follow this guide too. To fix this, you need to modify permissions again by following the instructions below.
1. Boot up Windows to the point it leads to black screen
2. Hold Ctrl+Shift and press ESC key to invoke Task Manger
3. Click on ‘File’ menu and ‘Run new task’ then type ‘cmd’ and hit ‘OK’
4. Type ‘takeown /f %SYSTEMROOT% /r /d y’ and enter. This will take ownership to all files in System32 folder.
5. Type ‘icacls %SYSTEMROOT% /t /c /q /grant Everyone:F’ and enter. This will grant full access to all files in System32 folder to everyone.
6. Reboot after everything is done and your Windows should no longer stuck at black screen.
7. If you can’t open Task Manager key, you can press Shift+F10 from setup CD.
I hope this guide will solve your black screen issue for good. If you have black screen problem and wish to test a new build with black screen issue fixed, please mail to lucifiar(@t]hotmail.com to ask for testing build.