I can boot from the USB on another Lenovo laptop but this one hangs on the splash screen as if it detects the USB is bootable but is unable to boot from it.

I wanted to try fsck so I made a bootable USB with the latest Ubuntu image and discovered something else: my laptop won't boot from USB now (it did before, that's how I did the initial install). Grub seems to be working fine and I'm a bit nervous to touch it without knowing what I'm doing, since I don't want to mess up my Windows partition (but if others think it sounds grub related I will try updating/reinstalling grub). This question gives a lot of resources but none seem to apply to me. I can access the virtual console with Ctrl+ Alt+ F3 where I tried the suggestions from the linked question ( sudo dpkg-reconfigure gdm3, sudo service gdm3 restart, and editing /etc/gdm3/nf and unmcommenting #WaylandEnable=false). From grub I can boot Ubuntu in recovery mode where I ran the dpkg tool to repair any potentially broken packages but that turned up nothing, and with the lid closed long before it powered off there shouldn't have been any chance of something critical being interrupted.Ī couple other common causes are lack of space (my Ubuntu partition has >80% free) and Nvidia graphics driver issues (I use intel integrated graphics). What I've tried:Īpparently a common cause for this is an update/install gone wrong. I can still boot the Windows partition without a problem. Now when I turn it on it loads grub but if I try to boot Ubuntu it goes to a black screen showing a blinking cursor, exactly like in this question. The laptop was on with the lid closed and the charging cable got disconnected, and it died. The setup has been working fine for me for 6+ months. I am running Windows 10, Ubuntu 20.04.2 dual boot on a Lenovo Thinkpad.

Custom windows 10 boot logo