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Lenovo G50-70 bios recovery
#1
OK, last year laptop was running with unlocked BIOS and everything was ok. 
Until now... I changed one setting (i don't remember which one) and now mainboard is broken. 
I teardown the laptop too access mainboard. I removed CMOS battery and pluged it after 10 min. Nothing changed. When i plug the power, auto the laptop starts(without pressing any button) and only the light turn on (not battery light) and the screen goes black. Am trying to recovery it but i can't find which name to rename the bios file... ANYONE !
find
quote
#2
Hello,
I've been trying to flash a modified bios for my Lenovo G50-70 in order to remove wifi whitelist, but no success yet. I updated the bios from 9ACN25WW to 9ACN26WW using an executable downloaded from Lenovo's website, because 9ACN26WW has the sleep bug, so I could flash a new modified bios. I have a three operating system on my laptop: Mac OS High Sierra, Windows 10 and Ubuntu 17.10, so my bootloader is Clover.
After updating from 9ACN25WW to 9ACN26WW, Clover didn't show up in the boot options, so I manually added it using a software called EasyUEFI. After that I rebooted and I got to the Clover screen. I extracted the bios image, patched it using Andy's tool, and tried to flash using FPTW64 version 9.5 . I always get error 204: data verify mismatch found. So FPT isn't doing anything at all, it shows "reading flash", "erasing flash block", "programming flash", "verifying flash" and then it says "error 204: data verify mismatch found". 
The bios isn't working fine anymore as well, if I hold FN + F2 at startup it gets stuck, I can still access the BIOS settings using the Novo button, but if I change any setting, save and reboot, I always get the default settings. I'm also not able to boot from USB anymore, it just gives me an error. All my operating systems boot fine anyway, but the bios became really slow, for example when I'm in the BIOS settings and I press any key, it reacts after 2 or 3 seconds, it's really slow now. I also tried to copy the file "bios.bin" on a pendrive, and rebooted holding keys Windows + B or Windows + R, the laptop beeps a lot, but takes me to the clover screen after that. I'm not even able to update the bios using Lenovo tools, when the laptop reboots it always takes me to the Clover screen.
Is there anything I can do without substituting the bios chip? Any "software" solution I haven't tried yet?
find
quote
#3
(07-03-2017, 02:09 PM)leosoulew Wrote: OK, last year laptop was running with unlocked BIOS and everything was ok. 
Until now... I changed one setting (i don't remember which one) and now mainboard is broken. 
I teardown the laptop too access mainboard. I removed CMOS battery and pluged it after 10 min. Nothing changed. When i plug the power, auto the laptop starts(without pressing any button) and only the light turn on (not battery light) and the screen goes black. Am trying to recovery it but i can't find which name to rename the bios file... ANYONE !

i have the same exact scenario can someone help me please?


thanks
find
quote
#4
(02-16-2019, 08:29 AM)lico.diaz Wrote: i have the same exact scenario can someone help me please?


thanks
Hi
need your original Lenovo bios
find
quote
#5
I had installed an modified bios on my g50-70, i tried to set up memory xmp hoping to easily reset bios if something goes wrong, but now my computer won`t turn on, when i press the power button the battery led and the power led turn on for about 10-15 seconds and then turn back off, i tried to remove the battery which is on the motherboard (as i used to do on desktop computer to reset bios) but nothing change, please can someone help me?

------------------------------SOLVED-----------------------------------
find
quote
#6
(02-16-2019, 09:39 AM)lico.diaz Wrote:
(02-16-2019, 09:00 AM)Dudu2002 Wrote:
(02-16-2019, 08:29 AM)lico.diaz Wrote: i have the same exact scenario can someone help me please?


thanks
Hi
need your original Lenovo bios

Hi, I have a similar scenario with the factory BIOS, the laptop Lenovo G50-70 20351 is powering on but no screen, black screen.
I need a .bin file so i can flash it using CH341 Programmer, right now the lenovo.com website is useless, they provide BIOS only as .exe file for Windows 8, so please can you help me with the correct .bin file.
I attach the backup made with CH341 of the current BIOS.

Thanks in advance for your help.


Attached Files
.bin   LENOVO-G50-70-OLD-BIOS.bin (Size: 8 MB / Downloads: 2)
find
quote


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