Anything that uses recovery or nvflash won't work because of the power button... you need the staging partition!
You can do it by copying a stock blob to the staging partition. The TF will do all the flashing for you
You do need adb and root, but no power buttons.
Here's the 1 click method!
Be sure ADB is installed on your PC. There are threads on how to do this all over XDA.
Be sure your battery is charged.
Download a stock firmware from the ASUS website. Be sure to match your country code (WW, TW, US, etc.)
Unzip the firmware. It should create an ASUS/Update/some.zip. Unzip the some.zip file too.
If this went well you should be looking at a giant blob! ~500M or so. No kidding- the file will be called "blob"
Use ADB to push the blob to your TF or just copy it to your SD card. Your choice.
adb push blob /data/local/
Type these commands into the shell
Now the magic happens....
su dd if=/data/local/blob of=/dev/block/mmcblk0p4 reboot
Your TF should reboot and it will flash the stock rom. You'll see a blue progress bar that will flash quickly, but still take longer than you think it should. Be patient. Your TF will reboot automatically.
You can now delete the blob file from your TF.
Sent from my DROIDX using XDA App