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bricked bios on thinkbook 15 g2 itl

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    #1

    bricked bios on thinkbook 15 g2 itl

    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
    Last edited by Magician1981; 09-21-2024, 11:37 AM.
    Tags: None
    #2
    Originally posted by Magician1981 View Post
    Greetings,

    I kindly request assistance with the following. My lenovo thinkbook 15 g2 itl has the following symptoms:
    Where's your dump ?
    Last edited by SMDFlea; 09-22-2024, 04:08 AM. Reason: edited full quote
    ----------------------------------------------------------------------------------------------------------------------------------------------------------
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    Become a Badcaps supporter
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    Comment

      #3
      Originally posted by Magician1981 View Post
      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
      Attached Files

      Comment

        #4
        Originally posted by hoaca388 View Post

        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?

        Comment

          #5
          Originally posted by shiyab View Post

          TRY 8MB 16 MB BOTH R FLASH
          May I inquire where/how you obtained this bios?

          Comment

            #6
            Originally posted by Magician1981 View Post

            May I inquire where/how you obtained this bios?
            HIS NEW BIOS

            Comment

              #7
              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
              Attached Files

              Comment

                #8
                Originally posted by Magician1981 View Post
                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
                All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                Comment

                  #9
                  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.

                  Comment

                    #10
                    Found the ic's underneath the tape/heatpipe. Will upload backups soon.

                    Comment

                      #11
                      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.
                      Attached Files

                      Comment

                        #12
                        Originally posted by Magician1981 View Post
                        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.
                        ----------------------------------------------------------------------------------------------------------------------------------------------------------
                        All donations to Badcaps are welcome.
                        Become a Badcaps supporter
                        >>>>> click on this link to donate <<<<<
                        Thanks to all supporters.
                        ----------------------------------------------------------------------------------------------------------------------------------------------------------​

                        Comment

                          #13
                          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

                          Comment

                            #14
                            Originally posted by Magician1981 View Post
                            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.

                            .
                            Attached Files
                            All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                            Comment

                              #15
                              I had no luck with 2.2.0.10. Will give it a try tomorrow.

                              Comment

                                #16
                                Still no luck, the chip is dead I guess. Thanx anyway

                                Comment

                                  #17
                                  Originally posted by Magician1981 View Post
                                  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
                                  All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                                  Comment

                                    #18
                                    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.

                                    Comment

                                      #19
                                      Hello Everyone can any Professional help me to clean BIOS file During update I remove Battery
                                      Attach original file

                                      MP25D3HH
                                      Attached Files

                                      Comment

                                        #20
                                        Originally posted by huss584 View Post
                                        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 ?

                                        Comment

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