lenovo flex 5 15ALC05 black screen

[marknolan]

The bios chip must be unsoldered from the board before writing or reading..
do not use the clip, you may have errors..if you do not have anything to unsolder it with,
solder wires between the programmer and the bios chip..
here is a video for example..https://www.youtube.com/watch?v=DWWi...nnel=ThisIsHow

Thanks for sharing Peste. I did manage to program it successfully in situ with the clip. The battery was disconnected of course. Agreed, though that it might not be best practice

[yaelll]

flex 5 15ALC05

Mines Faulty.

SS PW01R1HX
82HV005HMH
any bios recovery?

[peste]

flex 5 15ALC05

Mines Faulty.

SS PW01R1HX
82HV005HMH
any bios recovery?

post S/N, full name and model, motherboard model, TYPE,etc.
post the contents of the bios chip even if it is corrupted..

[lrdz]

Blackscreen after bios update from lenovo :

IdeaPad Flex 5 15ALC05

S/N: PW015HX3 and the board P/N : 5B21B85038

Thanks you so much for the bios file

[peste]

Blackscreen after bios update from lenovo :

IdeaPad Flex 5 15ALC05

S/N: PW015HX3 and the board P/N : 5B21B85038

Thanks you so much for the bios file

post the contents of the bios chip even if it is corrupted..

[lrdz]

Hello, me again, here is the bios dump
CRC32 = 0x6C9058A2
Attached (zip)

Blackscreen after bios update from lenovo :

IdeaPad Flex 5 15ALC05

S/N: PW015HX3 and the board P/N : 5B21B85038

Thanks you so much for the bios file

[m1ch43lzm]

Hello, me again, here is the bios dump
CRC32 = 0x6C9058A2
Attached (zip)

Blackscreen after bios update from lenovo :

IdeaPad Flex 5 15ALC05

S/N: PW015HX3 and the board P/N : 5B21B85038

Thanks you so much for the bios file

Try, BIOS extracted from Lenovo website, DMI and Win key inserted

Flex 5-15ALC05 Laptop (ideapad) - Type 82HV
S/N PW015HX3
MTM 82HV004HFR
BIOS ver GJCN34WW
DMI 5EA000-5EA3FF
Win key 617000-6170CF

Select correct 16MB chip (128) or equivalent in your programmer software, your backup is only 8MB
Example: W25Q128FW or W25Q128JW if your BIOS chip is W74M12JW

[lrdz]

Hello, my bios chip is an W25Q128JWSIQ,

bios was corrupted after an update from lenovo website, correct bios is an hard to find

Attached: bios with 16MB size (W25Q128FW setting)

[lrdz]

ok i think i find the bios here
https://www.badcaps.net/forum/troubl...hlight=15ALC05

so i need to copy the DMI & Win key and peraps cut the bios to 16MB ? and it's should work ?
My OEM key inside my BIOS dump contain "just for test". I suspect that the Lenovo utility copied everything without performing any personalization.

[lrdz]

Done! one laptop will be not trashed today, thanks all u guys

[m1ch43lzm]

Sorry I forgot to attach the BIOS to my previous post, here it is in case you still need it
The clean BIOS has this string at 617000

F l a s h C o m m a n d
just for test
/ioset 0xCF9 0xE /p /cvar /bbl /sd /sn /cac /cbp 30 /bcp /silent

If you copied it correctly from my instructions it should look like this

O e m A c t i v a t i o n V a r
just for test
01 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 1D 00 00 00
(your windows key)

​

If you already used the BIOS from post 2 or 11 as a base and copied the offsets correctly, congratulations

[DarkzShadow]

Hey Guys,
I’ve had 2 of the 5-14ALC05 laptops die within 2 months of each other — both bought at the same time as well.
The first attempt to fix it was to buy an Alibaba spec board replacement, but it only lasted 1 month.
I’ve now dumped all 3 BIOS files, grabbed the latest BIOS from the Lenovo website, trimmed it to fit, and swapped over the DMI and Windows key.
All the boards did a few cycles at the start, then booted. Everything seems to be alright except the power button indicator light just keeps flashing.

Flex 5-14ALC05 Laptop (ideapad) - Type 82HU
S/N R912RWS7
MTM 82HU003QAU

Flex 5-14ALC05 Laptop (ideapad) - Type 82HU
S/N R912T383
MTM 82HU003TAU

[SMDFlea]

Hey Guys,
I’ve had 2 of the 5-14ALC05 laptops die within 2 months of each other — both bought at the same time as well.
The first attempt to fix it was to buy an Alibaba spec board replacement, but it only lasted 1 month.
I’ve now dumped all 3 BIOS files, grabbed the latest BIOS from the Lenovo website, trimmed it to fit, and swapped over the DMI and Windows key.

There are lots of earlier bios versions to try https://www.badcaps.net/forum/troubl...95#post1769295