The host machine is Ubuntu 10.04 64bit and the guest Windows XP 64bit, everything was working until recently and I'm not sure what changed to make it stop. After it stopped functioning I tried upgrading to 4.0.4 from 3.2 but it still does not get past a screen that says
Windows could not start because of a personal computer hardware configuration problem.
Attempting to load an x64 operating system, however this CPU is not compatible with x64 mode.
Please install an i386 32-bit operating system.
But uname on the host outputs:
Linux vm2 2.6.32-30-server #59-Ubuntu SMP Tue Mar 1 22:46:09 UTC 2011 x86_64 GNU/Linux
The settings for the guest are:
enable IO APIC
enable nested paging
and essentially the defaults for the rest.
I'm not even sure where to look at this point so any help would be appreciated. Thanks.