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I am using VirtualBox 4.1.2 for Windows hosts

Here is the configuration used for the virtual machine:
VirtualBox configuration

When I start the virtual machine some files are loaded and there is a progress-bar Loading Files... then after it is finished there is a black screen for some 30 or 35 seconds.

Then comes the splash screen Windows Developer Preview which is displayed again for some 30 or 35 seconds.

After that there is a blinking message which says

Your computer needs restart
Please hold the power button
Code: 0x0000000A
Para
...some values in Hexadecimal...

It blinks for some time then comes to a halt.
Here is a screenshot.

blinking message

How do I get it to work?
Where is the problem?
Is it some problem with the RAM alloted to Windows 8 Developer Preview?

I am using this guide for reference.

Edit: Another guide which can be used for reference.

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What are the specs of your machine? CPU model, ram OS, maybe your hardware doesn't support virtualization... –  Nick Josevski Sep 16 '11 at 13:52
    
@Nick Thanks for the help, I had forgotten to enable virtualization from the BIOS. –  Alpine Sep 16 '11 at 14:04
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1 Answer

up vote 8 down vote accepted

Windows 8 needs hardware support for virtualization, and error 0x0000000A appears to be linked with the lack of the forementionned : althrough I see that your VT-x/AMD-V acceleration is enabled, I would recommend you to double check it (especially, verify that the feature is enabled in the BIOS setting menu).

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Yes my machine supports virtualization. Checking the BIOS I found that virtualization was disabled. Enabling it made the setup start straight away!! Thanks for the help! –  Alpine Sep 16 '11 at 14:05
    
Which machine do you have? –  venomrld Sep 16 '11 at 18:22
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