I just installed Ubuntu alongside Windows, and now nothing is working right. When I turn on the machine, the display appears blank until the login screen appears. No OS selection menu (which I had), no Ubuntu boot splash screen (which was also appearing), nothing. I feel like the display is disabled until Ubuntu boots up, because I don't even get the manufacturer boot screen. For instance, when I press the delete key to enter the BIOS setup, the Ubuntu login screen never appears, but neither does anything else. Same as if I press the down arrow and enter at the time I assume the OS selection menu is onscreen. Except it's not on screen, because the screen isn't even on - it remains off (not just blank, I can tell it's off). What do I do?
The weirdest part is that everything was working fine, manufacturer logo, boot selection, and Ubuntu splash all appearing, for a few days, until today. In the beginning I did have some issues getting things to work since my system is UEFI, but it was working, but now it has seemingly randomly stopped. One thing worth noting is that at one point after this malfunction I tried mounting the Windows partition, and I got this error:
The NTFS partition is in an unsafe state. Please resume and shutdown Windows fully (no hibernation or fast restarting), or mount the volume read-only with the 'ro' mount option.
It's certainly plausible that Windows could be hibernated, but I have no idea how to un-hibernate it because of the above issue.
My system is an Asus Q400A. Intel Core i7 3632QM, 8GB memory, HDD replaced with a 128GB Crucial M4 SSD.