virtualbox.org

Hello,

I am testing Virtual Box for the first time, but when trying to install Windows 7 Ultimate in Virtual Box, I always receive this error:

"Windows failed to start. A recent hardware or software change might be the cause. To fix the problem:

1. Insert your Windows installation disc and restart your computer.
2. Choose your language settings and then click "Next."
3. Click "Repair your computer."

If you do not have this disc, contact your system administrator or computer manufacturer for assistance.

File: \windows\system32\boot\winload.exe

Status: 0xc000035a

Info: Attempting to load a 64-bit application, however this CPU is not compatible with 64-bit mode."

I found several hints on the net, especially "Enable IO APIC", but they did not solve this problem.

I am running Debian Squeeze on a AMD Athlon II X4 640 AM3 with 16 G RAM.

Please help!

Thanks
Magnus

Are you sure that the cpu and bios supports vt? That vt is enabled in the bios?

Read the faq and the manual what to do for 64 bit guests.

A quick check on the CPU reveals that it does support AMD-V, but it's most likely not enabled in the system BIOS. Look for Hardware Virtualisation, Virtualisation or just plain AMD-V and enable it. If you can't find such an option, then check the motherboard manufacturer for a BIOS update and check it's release notes if it provides an option for it.

Hi,

you mean the real BIOS of the host machine?

The help text of the option "Enable VT-x/AMD-V" says that VirtualBox will *try* to make use of this feature. This sounds that it should also work even when it's not enabled?

Magnus

No, when it says it 'tries' to use it, means that it will use it if it's available. Just as how you can try to get a cup from behind a window, if the window is open, you will succeed, if it's closed, you will fail the attempt. Check your physical BIOS.

Well it works after enabling "Virtualization" in the physical BIOS. There is nothing like "VT-x/AMD-V", but it works.

Thanks!