Since the release of Windows 8.1, the ASUS Taichi line of computers have not been able to be upgraded while maintaining a satisfactory user experience. These machines have dual displays. The external touch display is on the back of the internal LCD display. The ability to switch back and forth between these displays is broken by Windows 8.1. It works fine in Windows 8. The majority of the ASUS tools fail to function properly on Windows 8.1 also.
I understand this problem lies with ASUS and not Microsoft, but with Microsoft threatening to stop updates for Windows 8 in June, this is going to be an issue. My $1,200 laptop will no longer get support from the OS manufacturer for security updates, yet the hardware manufacturer leaves me hanging out to dry. I am far from impressed with ASUS on this, and will never purchase their hardware again.
I have seen some rather hocus pocus suggestions from various people in both the Microsoft and Asus forums. None of them worked for me. The only solution will have to come from Asus creating tools for this line of computer. It would be nice if Microsoft would lean on them a little. I am going to take my laptop back to the Microsoft Store that I purchased it from and see it they can help.
If anyone has any suggestions or comments, I would be interested in reading them.
July 14, 2014 UPDATE
The Taichi 21 is still working fine as per instructions l posted in replies below. The newest BIOS allows the dual screen system to work, but you will need to update video and dual screen drivers afterwards.
The original post was not meant as a slam on Asus. Issues like this are frustrating for both the consumer and the support staff. The power supply on this laptop stopped working. I sent it and the laptop to ASUS and received the laptop and new power supply back two days later. That was awesome and unexpected. I assumed I would be without the laptop for a week, not two days.
Please read the two posts in the replies below if you are having this issue with the dual displays. It really is a nice laptop/tablet when it is working as expected.