that is truly an excellent tool and i can see how it has shown you the cause of your bluescreen problems, but to find the cure it's then that some assumptions are being made ?
As I understand it the overall power options in windows are mostly triggered reactions to timers or button presses such as sleep and hibernate etc but in amongst the advanced options there are settings which make specific power management changes , these are normally accessible from device manager ?
EDIT: What I've come up with is the device is supposed to be bus powered, firewire 400. However, with laptops, the FW buss isn't powered enough, so they have an aux power supply to use the device with laptops. My tower (mind you with an excellent T.I. firewire chip!) should be enough in its Balanced power profile!! I'm assuming High performance mode gives extra juice to everything, I know it makes your screen brighter, which I don't need, as well as to FW and USB busses. That's the only thing I can come up with.