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Have ALSO enabled the Hardware assisted Virtualization in the BIOS? BOTH need to be enabled.<br />
AND THEN <br />
You need to POWER off the server NOT just reboot.
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Have ALSO enabled the Hardware assisted Virtualization in the BIOS? BOTH need to be enabled.
AND THEN
You need to POWER off the server NOT just reboot.

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I didnot find Hardware Assisted Virtualization option in the BIOS. the options i see are in the image i attached.<br />
<a href="https://filedb.experts-exchange.com/incoming/2011/05_w20/457770/bios.jpg" target="_blank" class="file-inline" title="bios (51 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>bios.jpg</a>
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I didnot find Hardware Assisted Virtualization option in the BIOS. the options i see are in the image i attached.
bios.jpg [https://filedb.experts-exchange.com/incoming/2011/05_w20/457770/bios.jpg]

bios.jpg

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I have DL 380 G4 Server and i have installed Hyper V Server 2008 and configured through HYPER V Manager installed on Windows vista machine. When i am trying to start the virtual machine it gives me error&quot; An error occurred while attempting to change the state of virtual machine&quot; I have enabled the data execution protection feature in server BIOS.<br />
Kindly check the attachement<br />
<a href="https://filedb.experts-exchange.com/incoming/2011/05_w20/457750/error.jpg" target="_blank" class="file-inline" title="Error (91 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>error.jpg</a>
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error.jpg

I have DL 380 G4 Server and i have installed Hyper V Server 2008 and configured through HYPER V Manager installed on Windows vista machine. When i am trying to start the virtual machine it gives me error" An error occurred while attempting to change the state of virtual machine" I have enabled the data execution protection feature in server BIOS.
Kindly check the attachement

Cannot start Hyper V

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.