Help with corrupted bios for ThinkPad P1 Gen 4

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • trepachka
    Badcaps Veteran
    • Oct 2022
    • 451
    • United States
    #1

    Help with corrupted bios for ThinkPad P1 Gen 4

    Hello, I have this ThinkPad P1 Gen 4 that has what I perceive corrupted bios. Computer charges and upon pressing the power button, the keyboard lights up briefly, both fans begin to spin and the cpu gets warm. However, I get no post. I do get color palette cycling all sorts of colors on the screen when I press Fn-Cntrl-Power key combo at the same time (standard Lenovo screen test). So, this tells me the issue is with bios. All voltages are present including CPU, GPU and memory voltages.

    The bios file is a little tricky. I believe it has 2 identical 256Mb chips next to each other (photo attached). So, I extracted both files. I am hoping someone could rebuild the bios for me. Thank you.

    Model: ThinkPad P1 Gen 4
    S/N: R914P1CL
    Model Type: 20Y3004KUS
    Attached Files
    Tags: None
    • trepachka
      Badcaps Veteran
      • Oct 2022
      • 451
      • United States
      #2
      Just wondering if someone could help me out and fix the bios files. Thank you

        Comment

        Previous template Next

        Related Topics

        Collapse
        • lucaszmn
          Summary of BIOS Whitelist Removal Problem Lenovo Thinkpad T560
          by lucaszmn

          Summary of BIOS Whitelist Removal Problem


          Problem:
          I am attempting to remove the WWAN card whitelist from my Lenovo ThinkPad T560.
          Initial Findings:
          • My current BIOS version is N1KET58W (1.45).
          • I have a CH341A programmer and have successfully created two full backups of my BIOS.
          • I have the ability to use command-line tools on a Linux machine.
          Troubleshooting Steps & Conclusions:
          • I attempted to use several automated and manual patching methods on my N1KET58W (1.45) BIOS, including using hex strings. These attempts all failed.
          • I concluded that the
          ...
          08-12-2025, 03:01 PM
        • Loki_Fido
          Thinkpad X1 Yoga Gen 3 ,How to know if the BIOS is corrupted
          by Loki_Fido
          Hi everyone, hope everyone's having a great day.

          I have a Lenovo Thinkpad X1 Yoga Gen 3 for repair. (20LES3T900)
          I looked in every corner and the laptop seems fine. Its pulling 500mA but no display, no noise, nothing.

          So I assume its a BIOS issue. I downloaded the BIOS with CH341A and opened it on ME Analyser and didn't receive any errors.
          Does this mean the BIOS is fine? making it a hardware issue?

          I downloaded fresh BIIOS from the Lenovo site and used Hex Editor replace the Lenovo's BIOS into my BIOS region. But the file size ended up being...
          03-14-2025, 07:42 PM
        • FalconPunch
          Surface Pro X 1876 Bios corrupted
          by FalconPunch
          Hello everyone, I happen to have a Microsoft Surface Pro X 1876 in my hands. It was brought to me by a friends which happen to have taken off the bios chip to test another motherboard. Upon putting back the bios chip on the original motherboard, The PC is stucked on Windows logo and won t boot to bios or anything. I suspect that the changes of bios chip somehow corrupted the firmware inside. Is the hypothesis correct?

          Also i extracted the bios inside the chip which was on Winbond 25R128JWPQ you can find the file attached if you can fix it (if possible, I would like some insight on...
          08-09-2025, 03:56 AM
        • bannermast
          Lenovo Thinkpad P50 Bios Corrupted
          by bannermast
          Hello, it seems to me that my thinkpad P50's BIOS is corrupted. I tried to boot it up and the power button would only blink 3 times green. The serial number is missing from the bottom of the chassis so I'm not sure what to do. I hope it's not the motherboard that's broken......
          11-30-2024, 09:06 PM
        • MaxonDomkrat
          Lenovo Thinkpad X1 carbon 11th Gen BIOS problem
          by MaxonDomkrat
          Hi everyone.

          I have an engineering sample of a Lenovo ThinkPad X1 Carbon 11th Gen (TYPE 21HM-2FVT05, S/N PF-40G7CD) with an Intel Core i7 1360P (ES – Intel 0000). Since this is an engineering sample, the BIOS had a massive number of various settings. One day, I was experimenting with the BIOS settings and, after saving them, the laptop stopped booting and played a melody after pressing the power button, signaling error code 0002 (Internal bus error), just like in this post: https://www.badcaps.net/forum/troubl...shooting-lapto...
          07-30-2025, 01:27 PM
        • Loading...
        • No more items.
        Working...