bios flash fail

[airfunkg]

Lenovo b490 bios flash failed can't boot ,screen goes blank how to reset the laptop please any one help me

 

[hang-the-9]

For a failed flash, only thing you can do is replace the motherboard unless that system has a removable BIOS chip. Then you may be able to order one and replace it.

 

[Mark RM]

You can recover from a bad flash, Lenovo has always had a crisis recovery method for BIOS flashing failures.

Here's the outline;
https/superuser.com/questions/1011621/lenovo-b490-bios-update-failed

 

[hang-the-9]

You can recover from a bad flash, Lenovo has always had a crisis recovery method for BIOS flashing failures.

Here's the outline;
https/superuser.com/questions/1011621/lenovo-b490-bios-update-failed

I have not seen a recovery flash work but that was on different model laptops, probably depends on exactly what happened to cause the failure. I have gotten a system to turn on after a bad flash, but it would never load past the BIOS screen.

 

[Mark RM]

I have not seen a recovery flash work but that was on different model laptops, probably depends on exactly what happened to cause the failure. I have gotten a system to turn on after a bad flash, but it would never load past the BIOS screen.

I've had it work twice in recent years. Keeps me from having to burn a new BIOS and solder it on with the station. That takes two hours if you include assembly/disassembly - a BIOS recovery can take a few minutes.

Worth a shot in any case.