oraclevm安装winserver2012错误0x000000C4

主机是：win7 64位；

采用的oracle vm版本是4.3.26

在安装win server2012 64位时，出现错误，如下：

log文件头如下：

VirtualBox VM 4.3.26 r98988 win.amd64 (Mar 16 2015 17:35:35) release log
00:00:12.987610 Log opened 2015-03-29T04:07:42.653057000Z
00:00:12.987641 Build Type: release
00:00:12.987649 OS Product: Windows 7
00:00:12.987653 OS Release: 6.1.7601
00:00:12.987656 OS Service Pack: 1
00:00:13.508348 DMI Product Name: Latitude E6440
00:00:13.535098 DMI Product Version: 01
00:00:13.535140 Host RAM: 4001MB total, 1428MB available
00:00:13.535146 Executable: D:\programs\Oracle\VirtualBox\VirtualBox.exe
00:00:13.535148 Process ID: 3976
00:00:13.535150 Package type: WINDOWS_64BITS_GENERIC
00:00:13.573532 Installed Extension Packs:
00:00:13.573826   None installed!
00:00:13.611349 UIMediumEnumerator: Medium-enumeration finished!
00:00:15.069726 SUP: Loaded VMMR0.r0 (D:\programs\Oracle\VirtualBox\VMMR0.r0) at 0xfffff8800d40c000 - ModuleInit at fffff8800d42b770 and ModuleTerm at fffff8800d42ba80 using the native ring-0 loader
00:00:15.069939 SUP: VMMR0EntryEx located at fffff8800d42ccb0, VMMR0EntryFast at fffff8800d42be00 and VMMR0EntryInt at fffff8800d42bdf0
00:00:15.070016 SUP: windbg> .reload /f D:\programs\Oracle\VirtualBox\VMMR0.r0=0xfffff8800d40c000
00:00:15.107390 Guest OS type: 'Windows8_64'
00:00:15.136482 fHMForced=true - 64-bit guest
00:00:15.244876 File system of 'C:\vm' (snapshots) is ntfs
00:00:15.244997 File system of 'C:\vm\win64Server2012.vdi' is ntfs
00:00:15.259162 File system of 'H:\soft\os\windows server 2012 R2-9600.17050.WINBLUE_REFRESH.140317-1640_X64FRE_SERVER_EVAL_ZH-CN-IR3_SSS_X64FREE_ZH-CN_DV9.ISO' (DVD) is ntfs
00:00:15.747533 Shared clipboard mode: Off
00:00:15.930334 Drag'n'drop mode: Off
00:00:16.434368 ************************* CFGM dump *************************

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这个错误怎么解决呢？？？？方法如下:开启 VBOX 对 CMPXCHG16B CPU 指令的支持

http://bbs.pcbeta.com/viewthread-1362507-1-1.html

virtualbox安装windows 8.1或者windows server 2012 r2，出现0x000000C4错误，解决方案如下：
（1）命令行下， 运行下面代码，找到VM名称，通常是大括号及其内部内容："c:\Program Files\Oracle\VirtualBox\VBoxManage.exe"  list vms
（2）然后在命令行下运行下面的代码，记得先将[vmname]替换为VM名称：
"c:\Program Files\Oracle\VirtualBox\VBoxManage.exe" setextradata [vmname] VBoxInternal/CPUM/CMPXCHG16B 1

即： VBoxManage.exe setextradata {ffb15241-d261-48ab-8ed2-e6c6a1948c7a} VBoxInternal/CPUM/CMPXCHG16B 1