PSD file appears as black background layer

Hello there.

My .psd (digital paint) file displays as a black single layer background. My PC crashed but I saved my work before hand. My Win 10 PC crashes often times but I can get my work back but this time a black background layer is showing up.

I have tried the following remedies but they didn't work:

1. Used different PCs to open up the .psd.

2. Updated my GPU drivers.

3. Changed my GPUs (GTX 980 to RTX 3080 Ti).

4. Reinstalled Photoshop.

5. Used older versions: 18, 20, 21, 22.

6. Disabled GPU in the Raw Camera menu and Performance menu both.

7. Used several .psd repair apps.

8. Tried converting the .psd to image file.

9. I don't have a restore point for my Windows 10 so can't restore it to earlier time.

 10. Used other Adobe apps to open the .psd.

The file is 586 MB and doesn't show any message regarding corruption. I can provide the .psd if you need. Please help. 😔🙏