BIOS: Change back from Legacy to UEFI

[paperwhite]

While trying to fix a boot error (0xc0000034) on my laptop I accidentally changed my computer's BIOS from UEFI to Legacy, is there a way to change it back?

The computer is clean so it doesn't matter if it's a method that causes loss of data. I have a bootable USB with windows 10 (maybe 8) on it. At some point I got into the menu for this, but must of the times I just get straight to the BIOS. And when I got to the menu for installing windows, I got the error message "windows cannot be installed on this disk. The selected disk is of the GPT partition style." so I couldn't get past from there anyway

The computer is an MSI GE70 2QE

Here is what it says on the startup screen of the BIOS. The only options I have from here is either "Delete RAID volume" or "Reset Disks to Non-RAID" (none of which I know what it means)

Bios menu 1:
http://imgur.com/ykMreja

Bios info screen:
http://imgur.com/C2tP4ej


Would be very thankful for any help!

 

[Paul NZ]

Change it back in the BIOS. The same way you changed it to legacy

 

[paperwhite]

But since changing to Legacy, I can only see the screens that I attached, not Aptio setup utility where I changed it to Legacy in the first place?

 

[Paul NZ]

Thats the post screen not in the bios itself. Reboot and press del or F2 / whatever key to get into the BIOS

 

[paperwhite]

Thanks a lot, that worked! Now I'm back to my initial problem but I'll make a separate thread for that