I have bought laptop ThinkPad E540 a week ago. After two days, I pressed power on button but noting happened but only LED was shining.
I returned it to the store and they sent me a new one. But same problem occured. I press power on button, but laptop won't start. (Part number is 20C60045XS).
I tried turn it on only with charger connected and the same problem. I also tried trick with unplug battery and charger and then hold power on button, but i didn't help.
1) First remove the BIOS battery as well as uninstall the Lenovo Solution for small Business. See steps below for details.
2) Update your system BIOS
It was found that there is conflict within the software. Lenovo has created a new BIOS to address this conflict. Once you have followed the steps above proceed to download the latest BIOS update from the link below.
Once the BIOS is updated if you wish to reinstall the "Lenovo Solution for Small Business (LSSB)" software again, you may do so through the following download link.
Note - As there may be multiple causal factors for these symptoms, additional actions may be required.
If these long boot symptoms following the BIOS update occur, multiple customers have reported success in resolving them by disabling Intel AMT and setting the security chip, TPM, as active in the BIOS.
Steps to disable Intel AMT and enable TPM settings as below.