Fixes: 1.Fix: After load default in BIOS, LCD brightness can not return to default. 2.Fix: SUT hang up after reinsert DVD media when perform Delldiag DVD test 3.Fix: QuickSet can't popup critical message when insert special battery . 4.Fix: Brightness level will change during POST phase 5.Fix: System hang up in BIOS setup when press F2 under main tab. 6.Fix :System will keep in POST Screen if press F2/F12 continuously.