IMPORTANT: If you have already experienced the issue, you will need to recover the computer to fix it. More information regarding this issue is available from the Microsoft® Knowledge Base article Windows 8 freezes on black screen after the computer resumes from sleep mode (2850674). There is a possibility that the computer will freeze at startup and display a black screen when the Hybrid Sleep feature is enabled, the computer is put into either the Sleep or Hybrid Sleep mode, and then power to the computer is lost while the computer is in that sleep mode (for example, the battery runs down).