guys.. juz nw while i was using Garmin XT.. then suddenly my fren phoned me.. after toking right.. my hp immediately gone blank.. black in colour.. even when i tried to unlock the screen oso x works.. then i nid to take out the batt n put it in bak again n restart my hp. wen i restart my hp, the screen blank again, but is in white colour this time. Then i restart again then oni hp bak to normal.. any1 encounter that problem b4? is it normal? wen i tried my garmin again it's tk a longer time to lock it.. hope it wont hurt my hp