Hello. I have a problem getting Windows Longhorn to work. I can't take a picture because on printscreen, it restarts Virtualbox, so I just write out the error: "Windows could not start because this computer is no longer supported. Windows now requires that your computer compiles with the Advanced Configuration and Power Interface (ACPI) specification. Please contact the computer manufacturer for the availability of a BIOS update that correctly supports ACPI." What do I have to do now? Thanks in advance.