1. yes 2. then flash bios permanent, want to remove slic. you must back bios. 3. MMTOOL 4.50.0.23? you need to learn to modify bios, or upload bios backup here. they will modify it 4. then flash bios from dos with aflash2 or afudos command aflash2 /all or afudos /p /b /n /k not used EZ-Flash tool sorry, English is bad duoc voi nhung lai muon co 2 ba trung