Crosshair, Sound and keybinds reset after crash

How the heck did all these settings reset after a PC crash? I recently started playing again after almost 9 years. During these years i reset my PC a few times, rebuilt it from the ground up, cause ive sold my old one and when i got back to CS, the settings where the same as ive left them. Now my PC crashed once and everything is gone? Thank god for the screenshots i made years ago lmao