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Punch Card
Posts: 37
Registered: ‎12-05-2011
Location: United States
Views: 791
Message 1 of 2

BIOs update failed: won't boot up - Y470

After experiencing audio issues on this Y470, I posted another thread post asking for help.  Driver updates were suggested.  I flashed the BIOs.  It froze at "Begin EC update, please waiting..." and never recovered.


The laptop will not boot up.  It has no power.


I tried the following steps:

- remove battery and power cord

- usb flash drive with bios file named .fd, .bin, and .rom

- FN + B, power cord back in

- press power button

- let go of all buttons

- usb and power light come on

- usb drive light flashes and goes off

- fan stays running high RPM the whole time


It stayed this way for almost an hour at which point I just pulled the plug.


Any input?

Retired Moderator
Retired Moderator
Posts: 13,719
Registered: ‎12-07-2009
Location: CZ
Views: 771
Message 2 of 2

Re: BIOs update failed: won't boot up - Y470

please try this trick first:
remove the battery, unplug the ac pwoer, press power button for 30-40 seconds. replace the battery and check if it works.

you can also try to remove/replace/swap the ram sticks.

if these don't work, it's time to call lenovo support line due to flasing bios update damaged your mainboard.

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