So i was working on a wall and the pc freezed. Nothing to do apart a hard reboot.
Then Photoshop tells me he shut down due to a conflict with the gpu (**** you!), and when i try to reopen the file, i just got a black layer.
Now, i still see the picture in the windows preview, and it's still 265 mo in the directory, but photoshop open the black layer and tells me it's 41mo/1,5mo.
I just tried two psd recovery tool but they still end with he black layer.

I'd rather test the PSD files on some other Photoshop. Maybe, on a computer of your friend, for example. And if it shows the files good, I'd reinstall Photoshop. And I'd select files that were not opened during that hard reboot.

_________________
R-Studio Data Recovery Software

Do you have any knowledge of the .PSD file format? I mean on the binary level.

_________________
• Remote RAID, NAS, SAN, VMware, DVR (CCTV), flash and tape recovery. Data recovery support.

Likely too late for this one but wherever possible preserve originals, make copies, attempt recovery from copies.

Screw a recovery attempt up? original still intact, no worse off than when you started.

_________________
Когда хочется кушать – съешь всё.
Голод не тётка!

Why all the colourful language?
In a case like this the system shadow copy might be your friend?