05-25-2018 11:07 AM - edited 05-25-2018 11:30 AM
I have a Lenovo Thinkpad W540 which is out of warranty. While using the Lenovo System Update utility to update the BIOS, the BIOS update failed, and now my W540 will no longer boot. Is there a way to restore the BIOS without replacing the system board?
Is there a place where can I download the BIOS file (not only the upgrade utility)?
05-25-2018 12:41 PM
I would try resetting the BIOS by unplugging the coin cell battery for a few minutes, and then re-assemble and try booting the system up.
The steps to do so are pretty simple on that model, and only require a small Phillips screwdriver and and perhaps a pair of tweezers or needle nose pliers.
For access, remove the following as detailed in the Hardware Maintenance Manual
With both batteries unplugged, you might want to press and hold the power button for about 15 seconds to drain to make sure all power has dissipated.
Hardware Maintenance Manual ThinkPad T540p, W540, and W541
If that does not work, I am not sure you will be able to boot from a CD either, but a bootable CD version of the BIOS update is available from the support site for that system linked below.