|TELL US THE MODEL NUMBER !|
If you can read Japanese, try going here:
However, I translated pages there into English and it appears they have only a few software updates, some of which that require the original software, not all the original drivers.
If it has an Intel main chipset, you can go here on the Prius and and have it auto search for the motherboard device drivers you need:
If you still have un-identified devices after loading those, or in any case, you can....
Download this and run it.
System Information for Windows
It will identify the hardware devices.
Once you know the hardware devices, you can search for drivers for them, or you can tell us which of those you need drivers for.
For a laptop or a netbook, you must find the graphics drivers for your specific Prius model on the web, because the monitor drivers for your built in display are embedded in the graphics drivers.