Hi all

I am sharing a windows 8 tutorials here.

On a computer that is running Windows 8 Release Preview or Windows Server 2012 Release Candidate, the system may randomly stop responding (hang) when you work on multimedia or communication activities. This problem may occur during video editing, unified communications, or other multimedia activities.

This problem may occur because of an issue in the interaction between the state-machine driving dynamic tick transitions and the state-machine-driving clock rate changes.

To resolve this problem, install this update on the computer that is running Windows 8 Release Preview or Windows Server 2012 Release Candidate.

Note There is a workaround for this problem that disables dynamic tick. However, disabling dynamic tick reduces battery life and power optimizations. If you applied the workaround, we recommend that you re-enable dynamic tick after you apply this update. To re-enable dynamic tick, type the following command at an elevated command prompt, and then press Enter:
bcdedit /set disabledynamictick no

Update information:

This update is available from Windows Update. To install this update in Windows 8 Release Preview or in Windows Server 2012 Release Candidate, follow these steps:
In Control Panel, open Windows Update by swiping in from the right side edge of the screen.
Tap Search. Or, if you use a mouse, point to the lower-right corner of the screen, and then click Search.
Tap Settings. Or, if you use a mouse, click Settings.
In the search box, type Windows Update.
Tap or click Install optional updates.

For more information, clcik
Multimedia or communication activities may cause a computer that is running Windows 8 Release Preview or Windows Server 2012 Release Candidate to stop responding