sapphire HD 7790
i remove to old driver and nice clean hd7790 intalled but all the time blue screen keep coming [ like 10 min later ]and im using amd phenom x6 1075 cpu
if i dont install graphic card no hassle no problem but when i try to use graphic card blue screen problem
note : i install driver 4-5 times every instalition was normal no any errors also hardware instalitions as well nice and clean
why im getting this error screen ?