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Thread: Satellite C855-21Q does not start up - BIOS flash did not function

  1. Satellite C855-21Q does not start up - BIOS flash did not function
    #1
    Beginner
    Join Date
    Mar 2014
    Posts
    1
    Hi.

    I'm french, sorry if my English is bad.

    I updated the Bios of a Toshiba C855-21Q. But during the flash, laptop restart.

    Now, the computer won't start (black screen + power led on + wifi led blinking).

    I will try the recovery mode.

    I extracted the exe. Rename the FD file to PLCSF8.FD.
    Copy on the root of usb stick (256Mb FAT16).

    Then i plug it on laptop with AC, HDD, unplug. Just the USB KEY.
    Plug the AC, hold <Win> + B and start the computer.

    But nothing happen. The USB is not read (no blink)...
    I also tried with other key like Fn +F / Fn+B / Fn+Esc ... still nothing.

    What are the keys to start recovery.
    The process is okay ?

    Thank you.

  2. Re: Satellite C855-21Q does not start up - BIOS flash did not function
    #2
    Hi

    Unfortunately, you need special BIOS version to be able to flash the BIOS from USB flash memory stick.

    The point is that you could download only the Win-based BIOS version from Toshiba EU driver page and this BIOS version requires preinstalled system.

    In your case it looks like something went wrong during the BIOS update procedure and the EPROM module has not been flashed properly. To solve this issue, the EPROM module should be flashed once again using special BIOS crisis disk.

    From my knowledge this can be done by Toshiba authorized service provider.

    However, I also read in this forum that single users managed to reflash the BIOS by using the Phoenix Bios Crisis Recovery Tool. Not quite sure where you could find such software but recommend to google.

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