LENOVO 300e Gen2 Bios Password

[AncientRocks78]

Hi there, can anyone help me to clean bios password please, i'll be very grateful?
My Laptop is:
Lenovo 300e 2nd Gen
Model : 81M9
S/N : R911S76T
MTM : 81M9S03300
Board : BM5860_V1.3A

I attached the Bios Dump 9ZCM51WW, thank you in advance

[hoaca388]

Hi there, can anyone help me to clean bios password please, i'll be very grateful?
My Laptop is:
Lenovo 300e 2nd Gen
Model : 81M9
S/N : R911S76T
MTM : 81M9S03300
Board : BM5860_V1.3A

I attached the Bios Dump 9ZCM51WW, thank you in advance

Try

[AncientRocks78]

Try

Hi, thank you for the help! Unfortunately, after i flashed the bios, the screen stays off while the laptop running! I don't know what's wrong, but had several attempts flashing this night with my only CH341A, which doesn't recognize it perfectly! I was using it with the clip, for info

[AncientRocks78]

The chip reading was my fault, because, i did not plugged the USB-C charging port, so the chip can have enough voltage! Now i'm sure that the chip is properly flashed with the BIOS, and the reading is done and shows the exact data. Even when reading it many times, it shows same thing. But the screen stays always off, while the laptop is on!

I didn't powered it from before yesterday until after the flash, but what i did, before yesterday, is shorting two capacitors beside the CMOS Battery connector: 14 and C15. Will what i did is the cause of the BlackScreen?

[AncientRocks78]

Hello again,
Now on my desktop, i've just checked up my dumped bios bin, and found that it was corrupted dump by the CH341A, and that i had to connect the USB-C charging cable in order to make a good dump. Now, i don't have any other dump than that, would it be possible to rebuild the bios file so i can flash it back? Please, help me out!

I've attached the UEFITool Messages screenshot from my corrupted bios image dump, and a example of the same model from another topic attachement request BIOS file

[hoaca388]

Hello again,
Now on my desktop, i've just checked up my dumped bios bin, and found that it was corrupted dump by the CH341A, and that i had to connect the USB-C charging cable in order to make a good dump. Now, i don't have any other dump than that, would it be possible to rebuild the bios file so i can flash it back? Please, help me out!

I've attached the UEFITool Messages screenshot from my corrupted bios image dump, and a example of the same model from another topic attachement request BIOS file

300e 2nd Gen Notebook (Lenovo) (Type 81M9) - Type 81M9

[AncientRocks78]

300e 2nd Gen Notebook (Lenovo) (Type 81M9) - Type 81M9

Hello again,
I'm very gratefull as this BIOS file revived my laptop, as i've decided to desolder the chip, write the file on it, and solder it back! Everything was smooth, but on the setup screen, the BIOS shows (OA3 Key ID: Not defined) and "M829RRFF" as a S/N which is not mine. My S/N is:R911S76T
How please can i put back these infosin the DMI or Write them directly to the BIOS file. For info, my Windows key is the one on the dump file i've uploaded yesterday!

[hoaca388]

Hello again,
I'm very gratefull as this BIOS file revived my laptop, as i've decided to desolder the chip, write the file on it, and solder it back! Everything was smooth, but on the setup screen, the BIOS shows (OA3 Key ID: Not defined) and "M829RRFF" as a S/N which is not mine. My S/N is:R911S76T
How please can i put back these infosin the DMI or Write them directly to the BIOS file. For info, my Windows key is the one on the dump file i've uploaded yesterday!

Serial number is not in bios.

[AncientRocks78]

Serial number is not in bios.

Thank you so much dear hoaca388 I which you that, all your hopes to be granted and executed!