Solution 24012:Data Collection Ceases to Work on TI-Nspire™ Family Handhelds if Turned Off During Data Collection.
Why does my TI-Nspire family device fail to turn on if interrupted during data collection?
If a TI-Nspire family device is powered off in the middle of data collection,
it may fail when turned back on. Please do not turn off the TI-Nspire family
device while data collection is in process.