PC Failure to Power On: BIOS Adjusts Boot Order After Each Shutdown
PC Failure to Power On: BIOS Adjusts Boot Order After Each Shutdown
Completed a X79 motherboard build and encountered issues with the system losing its boot configuration after shutdown. The Windows installation in an M.2 slot is set as the first boot priority, but upon shutdown, it reverts to a different priority labeled “PATA SM:”. Accessing the American Megatrends BIOS allows manual adjustment of the boot priority back to the m.2 drive, though this needs to be repeated each time the system powers down. Attempts to reset the CMOS battery or follow the provided video instructions failed due to Fast Boot being disabled and the existing settings. The problem likely stems from conflicting boot settings or persistent BIOS behavior preventing consistent priority assignment.
I thought about reinstalling Windows using just the SSD (you already have other storage, yes?) Since when was I required to pick boot priority during installation? I think you shouldn’t need it—otherwise your motherboard might not boot from the M.2 NVMe drive, which seems to be a concern. Updated December 18, 2023 by leclod
Yes, you can fully prevent booting from the secondary storage device.
Replace the CMOS battery. This will reset the system to its default settings. Make sure to check the BIOS date and time, as it may be inaccurate or won't retain the updated values if the battery is faulty.