Plutonium

i keep getin error code3221225781 and i installed what you told when this shows up bit its still showing the same erorr meseage is i because im using windows 7 or is it some thing else

first of all sorri for bad english.everi time i start the plutonium exe it all ways displais an error meseage .is it because im using windows 7 or isit some thing else can anyone please help me.i keep getin error code3221225781