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Not applicable
Posts: 1
Registered: ‎12-17-2016
Location: IN
Views: 780
Message 1 of 2

lenovo b490 boot failed


i am updating my bios on lenovo b490 laptop .. after successful restart laptop unable to boot..still on black screen and unable to start bios and operating system.. any one help me.. 

my warrenty experied


how can i install bios for my laptop

Not applicable
Posts: 2,325
Registered: ‎11-07-2014
Location: US
Views: 722
Message 2 of 2

Re: lenovo b490 boot failed

Remove battery and AC power adapter from notebook (completely power down).

Press and hold the power key down for 30 seconds to drain the power from the unit.

Re-insert battery, attach power adapter and use "Lenovo Button" to start notebook and select choice to enter BIOS when presented.

In BIOS - set defaults, then "save and exit".

At this point the computer should restart, and return to your Operating System log in.

If not - then the BIOS you installed either was corrupted, did not complete, or was the wrong BIOS (not meant for your notebook). If that was the case then it may not be able to be recovered.

Good luck.


I do not work for Lenovo, I only provide suggestions based on my personal willingness to help others. All advice and comments are based on my experience, and do not reflect Lenovo policy, terms or conditions.

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