請高手幫我睇下咩事

近日電腦時常出現藍色畫面寫着
a problem has been detected and windows has been shut down to prevent damage to your computer.
driver_irql_not_less_or_equal
上面的意思係吾係說我的電腦和軟件不相融,我己經重裝個windows但都係有出現藍色畫面.
我的電腦
am2 4000+
asus m2n-e am2/nf570/
kingston 1gb
swagate 160gb
asus en8500gt