virtualbox.org

I installed a xp machine from the Internet Explorer Application Compatibility VPC Image of microsoft from this link
http://www.microsoft.com/downloads/deta ... structions
When I try to boot the machine I get the screen of xp and then I get a blue screen with lots of texts for a second and then the system reeboots over and over/
What can I do?

Probably a setting error of the PIIX controller type. See VirtualBox FAQ.