why does computer crash most days, page-57

I've located my recent saved excel from yesterday - it wasn't saved on external drive or locatable on recent history at first attempt.

Second time i opened excel, there were about 6 files with October showing, it was at the bottom of the pile.

No idea what happened yesterday, why an old file got saved to external drive instead of the one that was being used at the time.

I think i'll buy a new PC from MSY, send this one in to get fixed and keep it as a back up.