http://blogs.msdn.com/blakhani/archive/2009/05/25/my-first-experience-with-hyper-v-few-bios-setting.aspxI decided to write a new blog series to Install SQL Server 2008 on Windows 2008 cluster in Virtual environment. Since I got brand new Windows 2008 64 Bit machine, i decided to use Hyper-V to play around. I could install Hyper-V without any issue but Ien-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/blakhani/archive/2009/05/25/my-first-experience-with-hyper-v-few-bios-setting.aspx#9855972Mon, 03 Aug 2009 09:57:05 GMT91d46819-8472-40ad-a661-2c78acb4018c:9855972Akshay<p>Thanks. You need to enable Data Execution Prevention and Virtualization Technology (VTx) on HP machines :)</p> http://blogs.msdn.com/blakhani/archive/2009/05/25/my-first-experience-with-hyper-v-few-bios-setting.aspx#9855998Mon, 03 Aug 2009 11:02:10 GMT91d46819-8472-40ad-a661-2c78acb4018c:9855998blakhani<p>Hi Akshay,</p> <p>Could you please provide me more details about where to enable it?</p> http://blogs.msdn.com/blakhani/archive/2009/05/25/my-first-experience-with-hyper-v-few-bios-setting.aspx#9891480Fri, 04 Sep 2009 19:28:25 GMT91d46819-8472-40ad-a661-2c78acb4018c:9891480kayo<p>I could successfuly start Hyper-V machine after reading this Blog, Thank you very much! </p> <p>System Model &nbsp; &nbsp;OptiPlex 755 </p> <p>Processor &nbsp; &nbsp;Intel(R) Core(TM)2 Quad CPU &nbsp; &nbsp; E6770 &nbsp;@ 2.40GHz</p> <p>** My BIOS Version is A13 (latest at this time) **</p> <p>** on Windows Server 2008 R2</p> <p>Security &gt; Execute Disable (set to On) &lt;-- This was OFF</p> <p>Performance &gt; Virtualization (set to On) </p> <p>Performance &gt; VT for Direct I/O Access (set to On) </p> <p>By the way, the following option doesn't exist in my BIOS (maybe due to the version A13)</p> <p>Performance &gt; Trusted Execution (set to Off) </p>