[REQUEST] Lenovo G400(s) (7BCNxxWW) BIOS Unlock

[glide93]

Hi, I have a lenovo G400s with insydeH2O bios v2.02

Some days ago I flash a bios for G400s with adv and white list unlock, I change a video parameter the default value is 32 and I put 1024.

The problem is the laptop can not start, when I try power on with the power botton or the recovery botton the laptop turn on the leds and in two seconds the laptop power off and the screen dont show nothing.

How can I restart the default config for my bios? I try disconnect battery, ac wired and open it for remove the internal circle battery for a few minutes but dont work.

Some ideas? I need help. Please.

[BDMaster]

Try this :

Remove all power supply then RAM modules and Battery from MoBo !
Remount RAM modules and put Power supply without battery on MoBo then
Restart Laptop if all goes well go into Bios Setup and load Default Settings
and save, so exit and shutdown It !
Remount Battery on MoBo and switch on It !
Let me know
Regards

[glide93]

This method not work for my latop.

I dissambly all the components wait for assambly two hours and when I go step for step with your tutorial the laptop do the same when I try to power on the laptop turn on but in two seconds turn off.

I can do another things to resolve this problem? Thanks for your time.

[BDMaster]

Ok from my experience now only an HW SPI Programmer and Clip can do this job !
Look here :

https://www.bios-mods.com/forum/Thread-R...5#pid74575

Let me know
Regards

P.S. The cost is cheaper ($.30,00) get them and I will help You !

[glide93]

Thaks a lot for your help, I will read the post tomorrow and buy all the HW I need.

[glide93]

@BDmaster when I obtein the components for flash my bios. How can I recognize the bios chip?

[BDMaster]

Normaly is present this Eeprom Chip near the Chipset :

--- Flash Devices Found ---
EN25QH64 ID:0x1C7017 Size: 8192KB (65536Kb)

Look for the Chipset and then You'll fin the Eeprom Chip !
Try to download Schematics and Service Manual files !
Regards

[glide93]

Normaly is present this Eeprom Chip near the Chipset :

--- Flash Devices Found ---
EN25QH64 ID:0x1C7017 Size: 8192KB (65536Kb)

Look for the Chipset and then You'll fin the Eeprom Chip !
Try to download Schematics and Service Manual files !
Regards

Hi, @BDMaster I found my bios chip, the model is winbond 25Q64FVSIQ 1316
Where I should put the connector? In 24 or 25 usb?



Regards.

[glide93]

I try flash this bios with 25 usb https://www.bios-mods.com/forum/Thread-R...7#pid69717

The program detect the bios chip, then I select read the chip, and finally I open the .bin file of mod bios, and select "auto" when the software said finish I check the laptop but do the same.

I need help @BDMaster. Please.

[BDMaster]

Auto is the command to WRITE the file into Eeprom Chip !
You need to read and save the Firmware before do anything !
Can you read it and upload for me ?
let me know
Regards

P.S. Your laptop now is working ?