In the space of 2 hours we have had 2 x E14 Lenovo crash at the BIOS level ( Unbootable ) after updates
These devices don’t have reset button , so the Lenovo way is to let the battery drain ( New Battery is like 4 hours runtime)
Unscrew all the screws on the back of laptop, use a ruler or something plastic ( would not recommend metal as it will scratch ) to jimmy the plastic clips around the case open
Take off the back you will see a + \ – connector , pull the black material on this connection towards battery which will power it down
Plug it back in , put cover back on , turn Laptop back on and see the sign that “Updates successful ??? Lol”