Consider the following scenario:

• You have a multiprocessor computer that is running Windows XP, Windows Server 2003, or Windows Vista.
• You resume the computer from hibernation (S4).

In this scenario, the computer stops responding on a black screen.

Symptom 1
You are running a Windows Vista-based computer that has Onekey Recovery 5.0 installed. If you try to upgrade the operating system to Windows Vista Service Pack 1 (SP1) by using Windows Update or another method, you may experience a black screen issue after the computer is restarted.

Symptom 2
You are running a Windows XP Service Pack 2 (SP2)-based computer that has Onekey Recovery 5.0 installed. If you try to upgrade the operating system to Windows XP Service Pack 3 by using Windows Update or another method, you may experience a black screen issue after the computer is restarted.

Note: This issue occurs when the computer contains Onekey recovery software that is earlier than version 5.1. If the computer uses the Onekey recovery software version 5.1 or later versions, this issue does not occur.

Symptom 1

Consider the following scenario:

• On a computer that is running the release version of Windows Vista, a volume on the hard disk is corrupted.
• You restart the computer.

In this scenario, a black screen is displayed, and you cannot log on to the computer except in safe mode.

Symptom 2

Consider the following scenario:

• On a computer that is running Windows Vista Service Pack 1 (SP1) or Windows Server 2008, a volume on the hard disk is corrupted.
• You restart the computer.

In this scenario, the Autochk.exe application stops responding, and this prevents the restart process from continuing. If you press a key to cancel the Autochk.exe process, you can log on to the computer as expected.

Note: By default, the Autochk.exe application automatically tries to fix any hard disk corruption during startup. After Autochk.exe fixes the disk corruption, the system automatically restarts.

Consider the following scenario:

• You are running a Windows Vista Media Center-based computer.
• You eject a DVD or a Video CD (VCD) from the computer.
• You reinsert the DVD or the VCD and then resume playback.

In this scenario, the video window may appear black for five seconds or more. In some instances, video playback may not resume at all.

Consider the following scenario:

• On a Windows Vista-based computer, you redirect the Desktop folder to a network redirection folder.
• You enable the Always Available offline option to make the Desktop folder available offline.
• The computer is connected to a network that does not contain the redirection folder.
• You restart the computer, and then you enter your user credentials on the Welcome screen to log on to the computer.

In this scenario, you see a black screen for 30 to 120 seconds before the desktop or the Start menu appears.

Consider the following scenario:

• You have a multiprocessor computer that is running Windows Vista or Windows XP.
• The computer has exactly 32 processors.
• You resume the computer from hibernation (S4).

In this scenario, the computer stops responding on a black screen.

When you start a Windows Vista-based computer, the system may stop responding (hang) at a black screen.

Additionally, you may experience the following symptoms when you try to recover from this problem:

• If you restart the computer, press F8 before the Windows Vista progress indicator appears, and then click the Safe Mode option, the same problem occurs.
• If you start Windows Recovery Environment (WinRE) to restore the Windows Vista-based computer, WinRE stops responding.
• If you try to use Windows Vista installation media to repair the system, the system stops responding.

Consider the following scenario:

• On a Windows Vista-based computer, the screen resolution for the LCD screen is set to 1280 × 800 pixels.
• You run Windows Media Player in full-screen mode.
• You switch to TV mode.

In this scenario, the screen may become black.

You use a computer that is running Windows Vista Ultimate or Windows Vista Home Premium. When you use Windows Media Center to watch a DVD or to watch TV in full-screen mode, the computer goes to sleep. However, when the computer wakes up, the screen may be black. Or, the Media Center menu screen may be unresponsive.

Note: You may still hear audio by using the arrows on the keyboard to move around the Media Center menu.

When you open Volume Mixer in Windows Vista, the volume slider may appear with a black background.