How do I fix an ASUS Transformer Book TF101 that's stuck in boot?

most importantly I would need to know if its a TF101 or a t100 because there is a very big difference.if you can tell me that I can tell you how to take it apart

Press and hold the reset button for 40 seconds and then press again.

Try removing the battery for 20 seconds. Replace it and try again.

Three possible solutions, from mild to drastic--hope one of them can help.
1) In my experience, the battery can drop below a threshold voltage quite suddenly and cause the boot-up to freeze, or not start at all. Before you do anything else, be sure it's *fully* charged by leaving the tablet switched off and plugged into the charger for at least 12 hours. Then try starting it normally. If it still doesn't start up,

2) Try holding the power button down for a long press, at least 10-15 seconds. Sometimes this is enough to kick it into action. If not, you could try the nuclear option--

3) --a hard reset, which could be achieved by pressing a straightened paper clip into a small hole (*not* the headphone socket), or by holding down the power button and pressing the volume-up or volume-down button and then following on-screen instructions (check your manual). Note that this will erase all your user data and you should back up everything first, but if you can't boot I don't see how you could accomplish this.

Good luck!

The way to Hard Reset ASUS Eee Pad Transformer TF101-A1 to Full Factory Reset: For those who have any troubles with your ASUS Eee Pad Transformer, use the 10-12 sec force power off trick to attempt a fix. If that doesn't help, backup whatever you want to keep and perform a full factory reset.
Some times you will discover error when asus transformer hard reset, like not responding to your device or your gadget not responsible. Don't be worry, simply just restart this and wait a minute. I think's it's side-effects of hard reset ASUS Eee Pad Transformer TF101-A1.

I would go to the ASUS support site at

ASUSTeK Computer Inc Support FAQ Eee Pad Transformer TF101

Go to asus site there is a new flash for tf101, download and install

Did you ever get this working? I'm seeing the same error when trying to transfer an audiobook checked out from the Dallas Public Library to my Samsung Galaxy Nexus phone.

If you dont get through you can always try this onehttp://dlcdnet.asus.com/pub/ASUS/EeePAD/TF101G/e6640_TF101G_Manual.pdf