Game uninstalls by itself and won't reinstall

Win 10 x64 bit, game installed fine first time around (last year or so)and updated fine.i didn’t played it lately,now i wanted to do, but it says that game is not present in my system anymore,if i go to the store it says “error reinstall”, i choose to reinstall,after many hours of waiting(mainly the installation, depsite having an I7, 16 gb ram and a geforce gtx 970), the game won’t launch (i briefly see the logo,then crash to dekstop)and if i go to the store,again it says error.reinstall

any help?