If you are seeing this error after you select to boot from the USB drive, there is some kind of issue with their process which requires you to do a little workaround. I posted more details in the main instruction thread here: http://forum.chuwi.com/forum.php?mod=redirect&goto=findpost&ptid=2254&pid=11390&fromuid=6767
Also I think you must flash to the updated dual-boot BIOS in order to be able to use Windows from what I remember. The original BIOS only supports Remix possibly?
Basically the two key points are here:
- After you plug in the Windows WINPW USB to your tablet, start, and press F7 to choose USB for booting, it will start the boot process but very quickly give a blue screen error with ACPI BIOS error message. You will need to hold down the power button to force the tablet to turn off, and then turn it back on. But this time, when it is booting up do not hit F7 again -- instead let it come to the OS Selection screen and use volume rocker to select Windows like you are ready to boot into Windows OS. Make sure to leave the Windows WINPE USB in the whole time!
- Now it will boot into the Windows installation environment and run a series of scripts. It takes around 10 minutes and then turns the tablet completely off. It doesn't reboot .. so you have to manually turn the tablet back on again. Select Windows OS at the selection screen again.