I am using a dual boot config of WIN 10 and Ubuntu 14.04(LXLE distribution).I have untilized the same setup for 3+ yrs. I have grub setup with Ubuntu as the top selection. Today when I tried to boot up the screen went black as usual but reloaded the lenovo splash and then back to grub. It does this with a key punch or allowing the time to run out.
Finally I keyed down to Advance Ubuntu options and chose. Ubuntu with Linux 3.13.0-153-generic and *********0-151-generic (top two options) both yielded the same results as above. However, when I moved to the **********0-149-generic option (3rd) it booted right up as normal.
Since it booted I took that time to run boot repair to no avail. I can't seem to track down the problem. My info from boot repair is at http://paste.ubuntu.com/p/4xcD5vMZpq/
The machine is up to date. I have not added any new software or made any hardware changes. I just can't boot as I always have. Thanks for any help.