HL2.EXE ERROR

ok when i play legit without HACKS nothing happens i can play but when i turn on hacks go into game and round starts a error pops-up HL2.EXE has stopped working what do i do? for sure my system requirments are more then needed. what do i do plz help. thx

Obviously the hack your using doesn't work or your not running it right now if your getting the SAME error when your not even using hacks then you must reinstall steam.