Tag Archives: Hyper-V

How to enable virtualization on a Dell 780 to run Hyper-V

Leave a reply

I had used Dell Optiplex 755′s in the past for a cheap virtual host, but I recently got access to some Dell 780′s for the same purpose. The 780 can take 16GB of RAM which is also very handy when you are creating virtual machines.

You do need to make some changes though so that the Hyper-V role will work in Windows 2008 and Windows 2008 R2.

Follow the steps below:

Boot the PC and press the F12 key to enter the Boot Options menu and choose System Setup

Move into the Virtualization Support menu:

Choose Virtualization  and make sure it is set to ON (the boxed ticked)

Choose VT for Direct I/O and make sure it is set to ON (the box is ticked)

Choose Trusted Execution and make sure it is set to OFF (the box is un-ticked)

Move to the Security menu:

Choose CPU XD Support and make sure it is set to ON (the box is ticked)

Click on Apply then click on Exit.

As soon as the screen goes blank, press the power button and turn the PC off. ( you have to power it off, not just restart for it to work)

Wait 10 seconds then turn it back on again and virtualization will now work!

FYI I am running version A14 of the BIOS

How to fix "An authentication error has occured (Code: 0x8009030e) " error when trying to connect to a Hyper-V guest on Windows 2008 using the Hyper-V Manager

Leave a reply

I was trying to open up a guest in the Hyper-V Manager console and I got the following error:
“An authentication error has occured (Code: 0x8009030e) ”
I then tried to open a few other guests and got the same error. I restarted the Hyper-V Manager, but had the same problem.
The simple fix is to log out of the server, then log back in and you will be able to open the guests again.
This happens if you are usually disconnecting from the host, rather than logging in and out each time as the credentials become stale.

How to enable virtualization on a Dell Optiplex 755 to run Hyper-V

34 Replies

I have been building some test Windows 2008 Hyper-V server’s on Dell Optiplex 755 workstations with 8GB of RAM recently, and I thought I would let you know what settings to change in the BIOS to make this work.

At first I was getting some errors like these below:

  • Hyper-V launch failed; Either VMX not present or not enabled in BIOS.
  • Hyper-V launch failed; at least one of the processors in the system does not appear to provide a virtualization platform supported by Hyper-V.

This was happening because I had missed the Execute disable setting in the BIOS. To fix this, boot the computer and press F2 to enter the BIOS.

In the BIOS you need to change the following settings

  • Security > Execute Disable (set to On)
  • Performance > Virtualization (set to On)
  • Performance > VT for Direct I/O Access (set to On)
  • Performance > Trusted Execution (set to Off)

Save and exit the BIOS, then power the computer down. You must power it down for the settings to take affect.

You will now being able to run Hyper-V on your Dell workstation!

How to Enable Virtualization Technology on a Dell 2950 to use Hyper-V in 64bit Windows 2008

Leave a reply

Your processor must support VT and also have it enabled for you to be able to use Hyper-V in Windows 2008 server 64bit.

To do this on a Dell 2950, follow the steps below.

Go into the BIOS by pressing F2 as the server is booting.

Use the down arrow key to go down to CPU Information and press enter.

Use the down arrows to go down to Virtualization Technology and press the space bar to enable it.

Press Escape twice , then choose Save changes and Exit.

The server will do a hard power down by itself, then reboot.

Once Windows has booted, you can then check to make sure that Hyper-V is running and has no errors in the event log for it.