I bought a new dell laptop a couple of months ago that's running Windows 10. I did not install a password. I had heard about the secure boot and disabled it through the UEFI (F12 on startup).
I wanted an app (Microsoft now has an app store) but they make you get a Microsoft account. A few days later I shut down the machine and upon restart, it asked me for a password.
I knew that I could get into the machine and see the files (my passwords are in a text file on my windows desktop) if I installed Ubuntu.
I tried to see the files from the "Try Ubuntu" but they weren't accessible, so I made a small partition and installed Ubuntu. That's when I first heard about fast boot. Ubuntu installed OK. I have the grub menu that shows both Ubuntu and Win 10.
When I try to boot to Windows 10 I get a pixelated screen and it will not boot. I also can't access UEFI by hitting F12. My guess is I needed to disable the fast boot in Windows before I installed Ubuntu, but it's too late now.
Is there a way I can turn off grub or disable that feature from within Ubuntu?
I can't access the UEFI to get to the boot menu and it's stuck on booting from the HDD so I can't boot from a CD or USB.
I only need to get into Windows one time to turn off the hibernation/fast boot but can't find a way.
Any help you can give will be greatly appreciated!