Lenovo laptop boot up slower after mobo & BIOS update failed

August 14, 2016 at 14:33:28
Specs: Windows 64
guys please help me i have same problem with this laptop ( Lenovo z510 )
after motherboard changing it boot slow too slow around 20 till 40 sec freeze on black screen without Lenovo logo and some time it freeze on this logo some hour!!!
i tried to update bios but it says : insydeh2o - secure flash
error : firmware update failed!!!

new bios model name : AILZx
current system bios version : 8DCN37WW
new bios image version : 8DCN40WW

update progress: 0

Error: update bios failed!
i don't want to bring it back to warranty it would be more damaged!

somewhere i heard incorrect BIOS time could be a faulty CMOS battery (often coin sized CR2032) but i didn't test it till now firs because i don't have a correct battery and i don't know where i can find it second because if i open the device it would be out of service!

thank you for you help I'm so mad for this

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August 14, 2016 at 19:22:01
Who changed the motherboard & why? If it was a Lenovo authorized repair shop, that's who you should be dealing with. If you read the info about the BIOS update, it makes no mention of being compatible with Windows 10; it lists Windows 7 & 8 only. None of the "fixes" apply to your problem:

Flash BIOS update - Flash from Operating System version for IdeaPad Z410, Z510
Version 8DCN40WW (V40)
Applicable OS Windows 7 (32bit, 64bit), Windows 8 (32bit, 64bit)
Installation README
Updated Date: 2014/10/30
This package updates the basic input/output system (BIOS) on IdeaPad Z410, Z510

Summary of changes
8DCN40WW (V40)
1. To fix CPU stuck at 0.77GHz
8DCN39WW (V39)
1. Phase in V39 BIOS into Zx10 for solving CPU 0.77GHz issue
2. Solve Windows 7 SLP2.0 function issue

If you insist on updating the BIOS, you MUST do the following before attempting the flash:

"Turn off the comupter. Enter BIOS (press NOVO button). Change boot mode from UEFI to Legacy on the last tab. Save changes. Boot Windows. Run update file again. After successfull update return your BIOS settings back."

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