Dell Dimension C521 - bricked HELP!!

Discussion in 'BIOS Mods' started by slimtimdogg, Jul 16, 2012.

  1. slimtimdogg

    slimtimdogg MDL Novice

    Jul 15, 2012
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    Hi

    I tried to update the bios on my Dell dimension C521 the but after rebooting I get a black screen and the computer beeps (2 short 1 long). I did a backup of the bios before flasing using the Universal Bios Backup tool which created a .rom file, how do I restore this file? What else can I do to restore the bios? I did try to create a bootable floopy with Phoenix_Crisis_Recovery tool but I wasn't sure if I did it right.

    Any suggestions or help is welcomed!

    Thanks Tim
     
  2. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    #2 LatinMcG, Jul 16, 2012
    Last edited: Jul 16, 2012
    try this
    install www.7-zip.org
    extract DMC521-010111.EXE
    rename A17AS.BIN to AMIBOOT.ROM or your backup.. seems the A17AS file is small.
    put it in either floppy or usb.. think floppy is best choice with no dvd or hdd plugged in.
    find the AMI recovery method

    best would have been a backup from the dos tool afudos or phlash16, ph161700 or awdflash.. whichever works with this board

    try this renamed to AMIBOOT.ROM
    http://www.sendspace.com/file/kyqwfx
     
  3. slimtimdogg

    slimtimdogg MDL Novice

    Jul 15, 2012
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    Thanks for the suggestion and the file. I tried renaming the file and putting it on a bootable floppy but no joy, the desktop is trying to read the floppy drive but nothing happened after 10mins.

    Not sure if it's the floppy disk or the image!

    Any suggestions on how you do the awdflash?
     
  4. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    #4 LatinMcG, Jul 16, 2012
    Last edited: Jul 17, 2012
    if the pc was working u could have used awdflash to make backup.
    it should work with AMIBOOT.ROM
    try this one its 128 not 512.. size http://www.sendspace.com/file/jh6v7w

    or u can desolder and hotswap in a pc that has same socket and flsh from dos.
    1: boot dos in usb
    2: swap bios while pc is in dos booted carefully.. use toothpicks or something plastic to pry the chip out then push in bricked one.
    3: flash with awdflash bios.bin /QI (QI is to qualify bios chip internally, not on memory of original booted now sitting on desk that u took out after boot)
    4: power off and restore bioses to original boards. (solder it)

    i had a board that was similar not same and i soldered a socket from some network card i found .. then i was able to hotswap with a socket ( best to leave soldering to pros or youll break some contact pads of the 32 pin
     
  5. slimtimdogg

    slimtimdogg MDL Novice

    Jul 15, 2012
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    I got hold of another C521 and backed up the bios file using awdflash from dos. Loaded the bios.bin and awdflash file onto a bootable floppy but when the machine restarts it reads the floppy disk for 1min (which is a good sign) then stops and nothing happens after that. Left the machine on for 20 mins but nothing happens, the green light on the floppy drive stays green!

    Could it be the version of awdflash that I'm using or the bios.bin is corrupt?

    Would it be easier to buy a new bios chip with the firmware pre loaded and try soldering it to motherboard?
     
  6. tqhoang

    tqhoang MDL BIOS Modder

    Apr 29, 2008
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  7. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    #7 LatinMcG, Jul 19, 2012
    Last edited: Jul 21, 2012
    does the working pc have a socket PLCC 32 pin ? u can hotswap bios while in dos then flash broken.
    (if not u can get a socket from a Dlink lan card or a broken mobo and have pro solder it)

    try flashing older bios on good pc from dos. then make backup of that one to use on non booting with recovery methods.. some newer bios dont like to recover from old broken in chip.. need same old version to perform recovery.