Windows 更新失敗該如何? 更新後 hyperV 跑不起來?

Windows 更新失敗, 出現 update error
[try]

• safe Mode by F8
• run cmd as admin
• net stop cryptsvc
• cd c:\windows\system32
• ren catroot2 catroot3
• reboot to normal mode

[ref]
http://social.technet.microsoft.com/Forums/en-US/itprovistasetup/thread/3a117c99-cac2-4383-b27c-64b50cf31bf8/

 //=== 更新後 hyperV 跑不起來? hyperV failed to start

[try]

• run cmd as admin
• Bcdedit /set {current} hypervisorlaunchtype auto
• DEP/NoExecute : OptIn or OptOut?

或者試試 GUI tool,  EasyBCD

[ref]
http://social.technet.microsoft.com/forums/en-US/winserverhyperv/thread/ce2fbf98-91a4-413d-80aa-ed0cd5cc68d7

http://technet.microsoft.com/en-us/library/cc742454.aspx

//=== Windows Server 2008 does not include the System Restore feature
[ref]
Microsoft Knowledgebase article 926185