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The error is:

This kernel requires an x86-64 CPU, but only detected an i686 CPU. Unable to boot - please use a kernel appropiate for your cpu.

The thing is I have an Intel Core i5 3570K cpu, host system is 64-bit Windows 7 Pro, Service Pack 1.

I am installing from my DVD drive. Again why the error?

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closed as off-topic by Oli Jun 27 at 10:01

This question appears to be off-topic. The users who voted to close gave this specific reason:

If this question can be reworded to fit the rules in the help center, please edit the question.

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While your host machine is 64-bit, the virtual machine is apparently 32-bit. You should be able to change this in the VM's config in Virtual PC. Or your host may not be able to virtualize 64-bit guests (even though it is itself a 64-bit machine--on VMware, I have had that, and I'd guess it can occur on Virtual PC also). You could use the 32-bit version of Ubuntu, but you're probably best off addressing the problem in Virtual PC. VM settings in Windows are beyond the scope of what's on-topic here; I recommend asking on Super User. –  Eliah Kagan Mar 27 '13 at 4:24
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@GeorgeProcter I agree with Eliah. The best idea here would be to just use the 32-bit version of Ubuntu in the VM. You may also try another VM program like VirtualBox, you may have better success. Turning on the following options in VB may help. In VirtualBox go to the System page in a VM's settings and enable PAE on the Processor tab, and VT-x and Nested Paging on the Acceleration tab. –  japzone Mar 27 '13 at 4:50
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@ close voters: why should questions on installing Ubuntu to any (virtual) machine be off topic here? Also see askubuntu.com/questions/6361/ubuntu-on-microsoft-virtual-pc –  Takkat Mar 27 '13 at 7:27
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@Takkat Questions about installing Ubuntu on Virtual PC are not genrally off-topic. This question appears off-topic because it's really about how to create a 64-bit virtual machine in Virtual PC. –  Eliah Kagan Mar 28 '13 at 13:15

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