Bizarre issue - Lost progress -

I’ve checked over this thoroughly and I assure you it happens.

  1. I work on a project throughout the day. I save frequently. Maybe six times a day.

  2. I close the program.

  3. I turn on the program the next day and all my work is gone.

  4. I check the backup folder - no backups - no evidence that any work ever happened.

  5. I open the project and close the project a few times, making a change here and there.

  6. I open the project and all of my changes are gone - but the changes I made YESTERDAY are back.

…what?

This has happened three times, and I’ll never know if all the changes I made will disappear and I’ll never know when or if they’ll return.

I save often. No source control - no extra software - no funny business. Just a simple blueprint only project. Files disappear on their own. File names change on their own. I’m not insane, I know it happens.

Any idea what the heck could be going on?

EDIT: I should add that my computer has not been having a very great time lately and has subjected me to frequent crashes and BSOD. I’ve already ordered a replacement, but until then, I need this project to get done.