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Updated BIOS in Acer Aspire 5745G from 1.11 to 1.19. Now showing Black Screen.

Discussion in 'Acer' started by deep_blue, Apr 16, 2021.

  1. deep_blue

    deep_blue New Member

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    I have an old acer aspire 5745g laptop with windows 10. I used SSD+8GM RAM a few years back to make it running smooth, which it did nicely.

    However, currently, I believe the NVIDIA GeForce GT 330M graphic card is damaged and not working, as such it was using integrated intel graphic card only; that's why it was displaying but with poor/low brightness. Also, the laptop replaced battery is dead.

    Yesterday, I updated BIOS from 1.11 to 1.19 in a hope that it could recognize NVIDIA graphic card (but I am now sure graphic card is damaged). To my pain, now it is showing black screen when I start it.

    I downloaded BIOS from here: https://www.acer.com/ac/en/IN/content/support-product/2128?b=1

    Please help, how to get back the screen.
     
  2. Administrator

    Administrator Administrator Staff Member

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    please read bios chip with eeprom reader and post backup here
     
  3. deep_blue

    deep_blue New Member

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    What I did just now was, I flashed old BIOS 1.02 and it worked.

    1. I downloaded the oldest windows version from https://www.acer.com/ac/en/IN/content/support-product/2128?b=1

    2. Extracted the windows version and renamed ZR7x64EC.fd ---to---> ZR7X64.fd

    3. Formatted a USB drive with FAT and copied ZR7X64.fd to its root.

    4. Now I turned off the laptop while battery & power cable still connected to it.

    7. Connected the USB drive to a USB socket in the laptop and then pressed Fn+ESC. While keeping Fn+ESC pressed, I pressed the Power Button ON.

    8. I kept Fn+ESC pressed for a 5seconds, until I see the power-led in laptop start blinking.

    9. Left the laptop as it is for a few minutes, and it was still turned ON.

    10. After a few minutes, I turned off the laptop and turned it ON.

    11. And to my wonder-and-surprise, it had the oldest BIOS v1.02 flashed/installed into it.

    12. And I am able to see the screen now.

    I hope this helps someone out there, in case of a need.
     

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