I can boot from a thumbdrive and select G: bz 3.14.1 x86 04-14-2014 and it goes thru the scrolling page until it stops on the last line
ata5: PATA max PI04 cmd 0x170 ctl 0x376 irq 15
This is on a Lenovo X240. I've successfully used G4L on Lenovo T520,T510,T430, T420, L420.
I have the same issue with a Lenovo T440p, T540p and X1 Carbon.
Any help will be greatly appreciated.