I went trough this many times, and I also went quite easily out of this many times, BUT NOW IS DIFFERENT.
I flashed my TF101 to this awesome rom right here -------> [ROM][AOSP][ICS] Codename Android v1.5.5.3 [100% Dock support] - xda-developers
And it was showing a bright awesome boot animation, but didn't boot. So i just flashed my device back to ICS, the official ROM.
AND IT WENT IN CWM RECOVERY STRAIGHT AWAY!
I mean, when I flashed it to ICS, I restarted it, and it didn't show any progress bar at all, thing that should happen when flashing normal stuff. Kernel problem? ROM problem? Root problem??
PLEASE TELL ME WHAT IT IS!