Reboot and select proper device

Jason1995

Reputable
Apr 9, 2014
2
0
4,510
Hey guys,

My laptop was running normally in the morning and when I switched it on again an hour later I got this error on bootup "reboot and select boot device"

After hours of research, I went into BIOS and turned off "UEFI" and it worked again.

I'm confused on what "UEFI" is and how it turned on? (Or it was on all this time?) No idea what happened but I would like to know...

Thanks!
 
Solution
UEFI is a new boot mode.

BIOS would be....the old boot mode.

Around 2010 things started switching over.

As far as why your UEFI mode turned on by itself....I have no idea.

I don't think it was on all the time because if it was....I don't think it should have booted.

Here is some info.

https://www.marksei.com/bios-uefi-explained/
UEFI is a new boot mode.

BIOS would be....the old boot mode.

Around 2010 things started switching over.

As far as why your UEFI mode turned on by itself....I have no idea.

I don't think it was on all the time because if it was....I don't think it should have booted.

Here is some info.

https://www.marksei.com/bios-uefi-explained/
 
Solution