I have a system runs on windows-8.1, Asus motherboard(UEFI supported). Occasionally(at least once per boot) it opens up bios settings menu instead booting. It shows two boot device (i) HDD with windows, (ii) Windows boot manager.
When i choose 'Exit and discard changes', screen off few seconds and again shows the same screen or main screen of bios settings.(Motherboard has two screens, quick bios settings, from there one can open advanced bios settings).
If I power off system and boot again it may boot. Sometimes it don't boot up for 5-7 power off.
If I Use live-Ubuntu USB then it will normally boot.
What I have tried?
- Changed boot order - no effect.
- Update bios - Successfully updated, but no change in behavior.
- Try to change boot override(Set windows boot manager as first) - But it is not allowed.
- When I enable CSM(compatibility support module) it will show boot menu once, then boot up.
Is there any way to solve this, so that it run windows instead bios setup menu?