In that case.. Open your finder.
Then pull up the autorecovery folder location on screen..
Then, open your finder again, an d now type in time machine. Open time machine and it should show the time machine window.. if you hit the up arrow, it will go back in time.. Try to go back to the day you saved over it or the day before..
As long as time machine was on and running, you can restore the file this way.
if not, then next time you save over a file immediately go to the auto recovery location and make copies of everything you see. You have to be fast because, if you have word open and its set to autosave every 10 minutes. Then you only have ten minutes of word being open before it will over write the last autorecovery file ( erasing the old version of the document )
Also, if you didnt have time machine turned on, I st rongly suggest getting a cheap external drive and then turning on time machine and having it backup to the external drive. Time machine is an exceptional feature because it can save versions of your files and all data on your mac every hour, or every several hours, or every day ( or every week or month, etc )
That way, you can always go back to a previous version of a file, document, etc. heres an example of a cheap external drive
Hopefully though, you already had time machine turned on.
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