NEED BIOS LENOVO LEGION Y740S-15IMH

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • KLINIK ELEKTRONIK
    Senior Member
    • May 2019
    • 51
    • indonesia

    #1

    NEED BIOS LENOVO LEGION Y740S-15IMH

    Hello everyone
    i need bios LENOVO LEGION Y470S-15IMH
    SN:MP1TC9JM
    Code board :GLY5U LA-J931P REV 1.0

    Problem no display.
    this my bios no display👇

    thanks for help 🙏
    Attached Files

    if you find these attachements useful please consider making a small donation to the site

  • hoaca388
    Badcaps
    • Jan 2022
    • 12396
    • Socialist Republic of Vietnam

    #2
    Originally posted by KLINIK ELEKTRONIK
    Hello everyone
    i need bios LENOVO LEGION Y470S-15IMH
    SN:MP1TC9JM
    Code board :GLY5U LA-J931P REV 1.0

    Problem no display.
    this my bios no display👇

    thanks for help 🙏
    Laptop Legion Y740S-15IMH (ideapad) - Loại 81YX

    ​
    Attached Files

    if you find these attachements useful please consider making a small donation to the site

    ↵

    Any donations to badcaps are welcome, click this link to donate . Thanks to all the supporters
    ​https://www.badcaps.net/donate

    Comment

    • KLINIK ELEKTRONIK
      Senior Member
      • May 2019
      • 51
      • indonesia

      #3
      Originally posted by hoaca388
      Laptop Legion Y740S-15IMH (ideapad) - Loại 81YX

      ​
      thanks
      but same condition no display

      Comment

      • hoaca388
        Badcaps
        • Jan 2022
        • 12396
        • Socialist Republic of Vietnam

        #4
        Hardware check
        ↵

        Any donations to badcaps are welcome, click this link to donate . Thanks to all the supporters
        ​https://www.badcaps.net/donate

        Comment

        Related Topics

        Collapse

        • riko 656
          Lenovo Legion Slim 5 16APH8 (RTX 4070) - Turns on for a few seconds then shuts off. BIOS issue.
          by riko 656
          Hello everyone,
          I need help with my Lenovo Legion laptop. It turns on for a few seconds and then immediately shuts down. I believe this is a BIOS corruption issue.
          Laptop Model:
          • Model: Lenovo Legion Slim 5 16APH8
          • GPU: NVIDIA GeForce RTX 4070
          • Main BIOS chip size: 32MB
          • VBIOS chip size: 16MB
          Problem Description: The laptop was working perfectly. Now, when I press the power button, the keyboard lights up and the laptop powers on for just a few seconds, then it shuts itself off completely. After researching, I am convinced it's a corrupt BIOS.
          What I Have Tried So Far:
          1. I
          ...
          11-04-2025, 05:14 AM
        • macabook
          🛠️ MSI GP75 Leopard MS-17E71 – No Display, Deep BIOS/EC Troubleshooting
          by macabook
          Hello everyone,

          I’m currently working on a dead MSI GP75 Leopard (MS-17E71) motherboard (i7 CPU, NVIDIA GPU) with a no display/no backlight issue initially. After extensive investigation, I’m at a critical stage involving EC firmware, BIOS/ME region interaction, and possible deep corruption. I'm seeking advanced insight from anyone with experience in EC/BIOS sync issues or PCH-level behavior. Here’s a full breakdown:
          đź§© Initial Issue
          • Board powers on (fans spin, keyboard lights up and can be adjusted, caps lock led lights), but no display or backlight
          • External display (HDMI) shows
          ...
          07-24-2025, 02:17 PM
        • 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
        • lanovey
          SF314-41 BIOS without internal display
          by lanovey
          Hello there,
          I have a SF314-41 motherboard that i bought impulsively recently, the problem is that i only bought the motherboard only, nothing else. When i tried powering on the board with 19V (soldered on the DC IN port), and then shorting the pin 1-2 of the keyboard, the board is turning on (as indicated by the fan), however it seems like the board is displaying on the internal display as connecting to a display on the HDMI (external) does not display anything.
          I tried connecting a USB keyboard, the keyboard is powered on, however pressing numlock do nothing (supposed to toggle...
          06-13-2025, 02:38 AM
        • to5it0
          Need Clean BIOS/EC Bin File for Lenovo ThinkPad Yoga 11e 2H1703-27220F Rev. A Marked as U2501 on the motherboard.
          by to5it0
          Need Clean BIOS/EC Bin File for Lenovo ThinkPad Yoga 11e - Stuck with 0275 Error CMS

          Hello everyone,

          I am attempting a repair on a Lenovo ThinkPad Yoga 11e that is currently stuck at boot with the error: "0275 error CMS" even after setup new bios battery and will not allow me to enter the BIOS/Setup.

          This is a critical issue that I believe requires flashing the BIOS chip directly using a programmer (e.g., CH341A/RT809H), as standard software updates or resets are not possible.

          I have opened the laptop and identified the main BIOS chip...
          10-24-2025, 01:35 AM
        • Loading...
        • No more items.
        Working...