bricked bios on thinkbook 15 g2 itl

[Magician1981]

Greetings,

I kindly request assistance with the following. My lenovo thinkbook 15 g2 itl has the following symptoms:

- blank screen
- no post
- fan running at 100%
- unable to enter bios
- on powerup with pinhole method the led's of the power button+esc key+caps key lights up green for a brief moment

I've tried:

- holding power button >30s while unplugged from ac+unplugged battery+unplugged cmos battery
- above with pin hole method >10s

Was willing to try:

- obtaining bios .bin file from lenovo, finding out only a .exe file is available. So no point trying to flash bios with recovery, If this laptop even has such a hardware function build in. Did it before on a older amd based laptop by inserting a fat formatted usb stick with the bios file named accordingly and holding a combination of keys to start recovery process.
- read the required guides on this site to find out there are no linux instructions for extracting .exe file content (or I missed it somehow). Will look into it some more.

Unable to try:

- reading eeprom since I have no programmer hardware. The affordable one isn't recommended according to the guide.

Additional info:

Serialnumber: MP1YLMQF. MTM: 20VE0049MH. MO: MPNXB1222034. On the motherboard I've found a sticker that says 8S5B21B33034C1KS12T00LB, PN: 5B21B33034 21-02-27 lenovo. The motherboard has two 8 pin IC's with the following printed on them: winbond 25Q90DVN1G, 24256E S0O065 (or is it S00065?).

Requesting:

Instructions on how to unbrick the ThinkBook 15 G2 ITL which has probably a faulty bios. This is the i7 version (don't know how much ram is soldered onto it) but it would be nice if it works again.

Any help will be very much appreciated!

Kind regards,

MJ

[hoaca388]

Greetings,

I kindly request assistance with the following. My lenovo thinkbook 15 g2 itl has the following symptoms:

Where's your dump ?

[shiyab]

Greetings,

I kindly request assistance with the following. My lenovo thinkbook 15 g2 itl has the following symptoms:

TRY 8MB 16 MB BOTH R FLASH

[Magician1981]

Where's your dump ?

Unable to try:

- reading eeprom since I have no programmer hardware. The affordable one isn't recommended according to the guide.

Looking on amazon as we speak for a ch341a with clip that is 3.3V capable. It is worth spending 10 euro's for a possible working laptop. Any brands I should stay away from?

[Magician1981]

TRY 8MB 16 MB BOTH R FLASH

May I inquire where/how you obtained this bios?

[shiyab]

May I inquire where/how you obtained this bios?

HIS NEW BIOS

[Magician1981]

Hi,

I've used asprogrammer to read the winbond chip twice and they are almost empty by the looks of it? There was no 25Q80DVN1G option only 25Q80DV. I made a mistake in my original post, needs to be 25Q80DVN1G instead of 25Q90DVN1G. Unfortunately I was not able to read the 24256E. Tried every possible position and _24Cxxx option from the menu. Verify IC> IC is not responding message. What am I doing wrong? Any help would mean a lot.

Kind regards

[SMDFlea]

Hi,

I've used asprogrammer to read the winbond chip twice and they are almost empty by the looks of it? There was no 25Q80DVN1G option only 25Q80DV. I made a mistake in my original post, needs to be 25Q80DVN1G instead of 25Q90DVN1G. Unfortunately I was not able to read the 24256E. Tried every possible position and _24Cxxx option from the menu. Verify IC> IC is not responding message. What am I doing wrong? Any help would mean a lot.

Kind regards

None of those are the bios chip. Don`t erase them, leave them alone. I think your motherboard is a compal LA-K052P , you can use the LA-K051P schematic and boardview to help you locate the bios chips https://www.badcaps.net/forum/troubl...matic?t=114848

[Magician1981]

I has to be W25Q80EWZPIG_WSON8_6X5 then (UV21). It's on the other side. Can anyone confirm?

Update:

According to other post it is not. And having looked at the board more closely mine has several differences compared to LA-K051P.

[Magician1981]

Found the ic's underneath the tape/heatpipe. Will upload backups soon.

[Magician1981]

Trying with w25q128fv id. Seems w25q64fv does read something from the other chip. Found that suggestion on the winraid level1techs forum.

Update.

No go on the 128ahig. Used neoprogrammer and asprogrammer. Since this laptop came from a previous owner I'm guessing somebody messed with it. Here is the dump from the qh64ahig, verfied the md5.

[hoaca388]

Trying with w25q128fv id. Seems w25q64fv does read something from the other chip. Found that suggestion on the winraid level1techs forum.

Update.

No go on the 128ahig. Used neoprogrammer and asprogrammer. Since this laptop came from a previous owner I'm guessing somebody messed with it. Here is the dump from the qh64ahig, verfied the md5.

All you need is in # 3.

[Magician1981]

Hi,

I am looking for a version of NeoProgrammer, 2.1.0.19
According to info on winraid level1techs forum it is the only version that works good with the xm25qh128ahig when detecting/read/write.
Is it a good idea to expand this forum with a download section?

Kind regards

[SMDFlea]

Hi,
I am looking for a version of NeoProgrammer, 2.1.0.19
According to info on winraid level1techs forum it is the only version that works good with the xm25qh128ahig when detecting/read/write.
Is it a good idea to expand this forum with a download section?
Kind regards

Thread merged. NeoProgrammer 2.2.0.10 https://www.badcaps.net/forum/troubl...09#post1835409

Version 2.2.0.10 works ok, but if you want to try version 2.1.0.19 i`ve attached it.

.

[Magician1981]

I had no luck with 2.2.0.10. Will give it a try tomorrow.

[Magician1981]

Still no luck, the chip is dead I guess. Thanx anyway

[SMDFlea]

Still no luck, the chip is dead I guess. Thanx anyway

Is the type of bios chip SOP8 or WSON8 ,and what type of clip do you have, SOP or WSON

[Magician1981]

Sop and sop. Other ic "64" reads fine. Yesterday I was able to read the "128" a couple of times but every bin file had a different checksum. Today it won't read at all making me believe it has really died now.

[huss584]

Hello Everyone can any Professional help me to clean BIOS file During update I remove Battery
Attach original file

MP25D3HH

[huss584]

Hello Everyone can any Professional help me to clean BIOS file During update I remove Battery
Attach original file

MP25D3HH

Need Help Please any Update ?