bac nao co tay nghe va kinh nghem thu kiem tra dum em va giai thich tai sao trang chu dell ko nhan he thong nay nhe!thanks cac bac rat nhieu!may cua em service tag 57T6XJ1,DELL INPIRON 1545,em mua o HOP NHAT,HOM 15/9/09,HO BAO LA NHA PHAN PHOI CHUA CUNG CAP MA SAN PHAM KIP THOI CHO HANG DELL NEN CHUA CO!LA SAO CAC BAC?