场景说明：用虚拟机安装64位CentOS 6.5，然后出错，如下：
Thishost supports Intel VT-x, but Intel VT-x is disabled.
IntelVT-x might be disabled if it has been disabled in the BIOS/firmware settings orthe host has not been power-cycled since changing this setting.
(1)Verify that the BIOS/firmware settings enable Intel VT-x and disable ’trustedexecution.’
(2)Power-cycle the host if either of these BIOS/firmware settings have beenchanged.
(3)Power-cycle the host if you have not done so since installing VMwareWorkstation.
(4)Update the host’s BIOS/firmware to the latest version.
因为电脑是Intel
64bit CPU的，上面的意思说没有开启VT-x技术，要到BIOS里面修改设置。
解决方案：
本人台式组装机，重启开机按Del进入BIOS界面，按Enter进到CPU的设置，然后方向键滚动到“Intel Virtualization Technology”，Enter键选择"Enable"，
按"Esc"回到BIOS主界面，选择Security，找到 Intel VT-d，改为"Enable"。 然后，保存设置并退出。
在启动，然后，就OK了
VMware安装报VT-x未开启的解决办法