Toyota Repair: Toyota Sienna 2006, serpentine belt, toyota sienna

Question
A little while back my sienna started squealing when I started it with the AC on, and if I turned the AC off, the squealing stopped. I told myself I would get it fixed soon.  Then, a couple of days ago, I started the car, and the battery light went on, and the AC stopped working (only blew warm air).  Also, I no longer hear the squealing.  Today, it wouldn't start.  I jumped it, drove 100 yards and it died again. Serpentine belt? Alternator? I appreciate any advice.

Answer
Sounds like either your A/C compressor is broken and damaged the drive belt (which drives other components)
or
The serpentine belt could have failed by itself and now nothing is being driven i.e. alternator, A/C, power steering, etc.  Since the alternator is not powering the car, your battery is not being recharged.  It has been drained.