Hi. I was using my laptop (a Lenovo Yoga 7) this morning without issue when suddenly the display went. I could still hear my music playing and the keyboard worked so I just held the power button down to reboot. However, I then ran issue to the display not showing anything at boot. I searched for a solution online and found that this was a common issue with Lenovos which could be fixed by holding down the power button for 60s. This eventually seemed to work. But now when I boot into OpenSUSE I get into emergency mode and this set of messages. The first certificate warning is something I always get so it can be safely ignored
Your HDD/SSD (with root, swap and LUKS encrypted partition) is no longer found. Does it still show up in BIOS? If it doesn’t show up any longer in BIOS, it is a hardware problem.
Check BIOS, cable connections, harddrive/SSD health, …
I’ve been trying to power it back on, but now the display doesn’t show anything. The keyboard lights come on as does the fan, but that’s it. I had the same issue earlier; it seems kinda random as to whether it can successfully boot or not
Have you ensured it is completely powered off - there are rare instances where a laptop gets stuck in Hibernation mode.
Have you completely closed the lid for, say, a minute, then open and power up ?
Do you have an external monitor?
Might be an hardware issue.
SSD or controller.
if you use a USB-Stick to boot, does it find the SSD/media?
I was going to try these suggestions but after plugging the laptop into the power outlet after it died it suddenly started working again. Everything is as it was before. No idea what happened
^^^^^^^^
There’s your clue 