Google search and type there psd recovery tool or similar combination of words
Other way or ways to apply some resources suggested by Adobe
Open "My Computer." In Windows XP, the icon is on the desktop. In Windows Vista or Windows 7, you must access this via the "Computer" option in the Start menu.
Double-click the "C" drive, followed by the "Windows" folder inside. Locate the temporary Photoshop folder, which will look similar to this: "Photoshop Temp6382948398." Double-click the folder when you find it.
Locate the file inside the temporary folder that matches the name of the corrupted file. Double-click it to open it in Photoshop.
Click "Save As" in the "File" portion of the main menu bar. Save it in a different location and under a different name.