DEAR SIR, LAST SIX MONTH AGO I LOST MY BATTERY BACK UP.SO THE LAPTOP ONLY RUN BY CURRENT, SO IF COMPUTER IS RUNNING & CURRENT WILL BE LOST THEN AFTER THE CURRENT WILL CAME & MY LAPTOP WILL NOT DISPLAY, WHY?? NEXT MONTH I HAVE CHANG MY DISPLAY BUT IT WILL NOT COME, SO WHAT WILL BE DO?? GIVE ME THE REASON & SOLUTION read full review »