BSOD 0x00000069 IO1_INITIALIZATION_FAILED on USB CD boot - OptiPlex FX160 PC

Reported this via Twitter about an hour ago, was asked to drop the details here.

System runs a SiS chipset, uses SiS 7001 USB controller.

Trying to boot from a USB CD drive causes this error (with GUI boot, the system does not proceed to the first time setup - it crashes on the logo screen), USB drivers complaining. USB keyboard is unresponsive when the OS crashes out to the debugger, so a PS/2 keyboard was used from there.

BIOS is set to IDE HDD mode, OS installed currently is Win2K (because I was feeling adventurous yesterday).

Attached is the debug screens (crash codes, USB errors and bt log), and the devices installed on Win2K. The system does NOT have any room for an internal DVD drive.

LiveCD build 0.4.5 alpha.