My computer starting freezing (showing 100% disk usage for the boot drive) so I tried restarting. Now it won't get past the motherboard flash screen. If I wait there, it eventually goes to a screen with just a blinking underscore. Going into the UEFI Setup Utility, the drive is listed as SATA3__0. I'm not really sure how to continue here.
Boot drive: Samsung 840 Pro ssd
I have 3 other storage drives (2 hdd and 1 ssd) connected.
Motherboard is an ASRock Z87 Extreme 4.
When booting up with Tails OS on a flash drive, the disks utility shows the 2 ssds, but only one of the HDDs. I'm not sure if that's related.