n53sn

Hi, My laptop is ASUS N53SN, it has 4gb RAM, but i have added 2x2gb, now it have 4x2gb=8gb memory, My problem is, i used my laptop 1 month with no problem, after it crashed and restart, screen frezed, after one week i have a BSOD, and after one week every two day i have a BSOD, and one week...