I have a relatively new laptop. Recently when rebooting it just went to the GRUB bash-like interface rather than booting.
99 times out of 100 when rebooting the laptop doesn't recognize any USB key is plugged in and goes straight to GRUB recovery. #EFI boot sees the drives EFI files though.
1 in 100 times the whole thing boots just fine from either the drive or USB key.
BIOS hard drive diagnostics says it's fine.
Any ideas how to troubleshoot?