I was hopeing someone else would grab this before me, but it hasn't happened yet
Anyway, IMHO, there's only two possibilities with this problem, well... maybe three if you're not telling the whole story
- None, or very little transmission fluid..
- Destroyed, defective torque converter..
Now, with one of these scanerios, overfilling the fluid level and driving in mildly extreme conditions can cause some damage.
That's my

, but I'm no genius with the transmission electronics. The ignition cycling that corrects the problem sure makes it sound like electronics though