Hello,
I have a Lenovo Thinkbook 15 G2 ITL i5 Laptop (serial number: MP2BFZEF) that when I turn it on, the led on the power button lights up for 5 seconds, then goes out. There's no display and nothing happens.
So I thought it was a Bios problem.
I found 3 bios chips on the board, which I read with a bios programmer: two XMC model bios chips and a Winbond model bios chip. Each XMC model bios chip has two partitions named XM25QH128A [3.3V] and XT25F128A [3.3V]. And the Winbond model bios chip has three partitions named W25Q80BL 3.3V, W25Q80xV 3.3V and W25Q80DV 3.3V.
The two XMC model bios chips all have two 16Mb files (XM25QH128A and XT25F128A) each one, but their contents are different.
The Winbond chip has three files that only weighs 1Mb each one and they all have the same content. It doesn't look like a complete bios file.
I've attached to this post the original bios I extracted from these three bios chips: XM25QH128A and XT25F128A of the first XMC bios chip; XM25QH128A of the second XMC bios chip; W25Q80BL, W25Q80xV and W25Q80DV of the Winbond bios chip.
Unfortunately, for the second XMC bios chip, I only dumped the XM25QH128A partition and then erased it. But its XT25F128A partition was also erased (even though I didn't select it). So I don't have the original dump file of the second XMC bios chip XT25F128A partition.
I followed the tutorials given on Badcaps:
1. I went to the Lenovo support website, downloaded a bios update and extracted a 26Mb .bin file.
2. I also followed the Badcaps tutorial to modify the .bin file extracted from the update, to obtain a 16Mb file that I flashed on the two XMC model Bios chips. I couldn't flash the Winbond Bios chip because it doesn't support files larger than 1Mb.
But this didn't solve the PC problem and the same symptoms described above persist: when I turn it on, the led on the power button lights up for 5 seconds, then goes out. There's no display and nothing happens.
Can you help me with working Bios files for both chips for the Lenovo Thinkbook 15 G2 ITL i5 Laptop? Thanks.
I have a Lenovo Thinkbook 15 G2 ITL i5 Laptop (serial number: MP2BFZEF) that when I turn it on, the led on the power button lights up for 5 seconds, then goes out. There's no display and nothing happens.
So I thought it was a Bios problem.
I found 3 bios chips on the board, which I read with a bios programmer: two XMC model bios chips and a Winbond model bios chip. Each XMC model bios chip has two partitions named XM25QH128A [3.3V] and XT25F128A [3.3V]. And the Winbond model bios chip has three partitions named W25Q80BL 3.3V, W25Q80xV 3.3V and W25Q80DV 3.3V.
The two XMC model bios chips all have two 16Mb files (XM25QH128A and XT25F128A) each one, but their contents are different.
The Winbond chip has three files that only weighs 1Mb each one and they all have the same content. It doesn't look like a complete bios file.
I've attached to this post the original bios I extracted from these three bios chips: XM25QH128A and XT25F128A of the first XMC bios chip; XM25QH128A of the second XMC bios chip; W25Q80BL, W25Q80xV and W25Q80DV of the Winbond bios chip.
Unfortunately, for the second XMC bios chip, I only dumped the XM25QH128A partition and then erased it. But its XT25F128A partition was also erased (even though I didn't select it). So I don't have the original dump file of the second XMC bios chip XT25F128A partition.
I followed the tutorials given on Badcaps:
1. I went to the Lenovo support website, downloaded a bios update and extracted a 26Mb .bin file.
2. I also followed the Badcaps tutorial to modify the .bin file extracted from the update, to obtain a 16Mb file that I flashed on the two XMC model Bios chips. I couldn't flash the Winbond Bios chip because it doesn't support files larger than 1Mb.
But this didn't solve the PC problem and the same symptoms described above persist: when I turn it on, the led on the power button lights up for 5 seconds, then goes out. There's no display and nothing happens.
Can you help me with working Bios files for both chips for the Lenovo Thinkbook 15 G2 ITL i5 Laptop? Thanks.
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