My .exe file open with notpat

Hello,
my .exe file open with notpad and i cant change them with open with .. and cant run FpT softwere and also cant change them with cmd
i try to fix it in control panel-> folder option but cant find .exe in folder list
i try to run regedit.exe but cant do it and all of my file open in notpad
i just can open them in Run as

plz help me if u know how can i fix it

ty alot