The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    ACER ASPIRE 5740 BIOS LOCATION

    Discussion in 'Acer' started by nawfel, Jun 12, 2015.

  1. nawfel

    nawfel Newbie

    Reputations:
    0
    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    5
    hi
    i am about to replace my dead bios after bad flash
    i ordered a new one on ebay. but I am confused. how to diffrentiate between KBC BIOS and Main bios chip?

    can you please help me out? a picture would help a lot

    thanks
     
    nawfel, Jun 12, 2015
    #1
  2. downloads

    downloads No, Dee Dee, no! Super Moderator

    Reputations:
    7,729
    Messages:
    8,722
    Likes Received:
    2,231
    Trophy Points:
    331
    @nawfel
    Main BIOS is marked U56 on the motherboard. I don't have photos of the motherboard that show enough details to find it for you but it's marked so you will be able to find it yourself.
     
    downloads, Jun 14, 2015
    #2
  3. nawfel

    nawfel Newbie

    Reputations:
    0
    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    5
    hi
    thank you for your reply

    i found the u56 chip. it has a sticker on it. it's located on the flip side of the motherboard.

    i confused it with u16 which apparantly is the EC KBC bios.

    just to make sure. the kbc bios remains untouched after a bad bios update under widows?? (from 1.09 to 1.28)
    the laptop powers on normally. but nothing happens. black screen and no activity.

    thanks
     
    nawfel, Jun 14, 2015
    #3
  4. downloads

    downloads No, Dee Dee, no! Super Moderator

    Reputations:
    7,729
    Messages:
    8,722
    Likes Received:
    2,231
    Trophy Points:
    331
    Yes U16 is KBS BIOS but that's not the one you should be concerned with, so it's U 56 only for you.
     
    downloads, Jun 14, 2015
    #4
  5. nawfel

    nawfel Newbie

    Reputations:
    0
    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    5
    really appreciate it :)

    any recommendations on soldering iron? i need to buy one for this purpose only. i never use irons.
    so what wattage? any iron tip recommendation?

    another question if u don't mind. how can i confirm that my KBC is fine :)

    sorry for all these question
    you're the BEST
     
    nawfel, Jun 14, 2015
    #5
  6. downloads

    downloads No, Dee Dee, no! Super Moderator

    Reputations:
    7,729
    Messages:
    8,722
    Likes Received:
    2,231
    Trophy Points:
    331
    Well I won't be any help as far as soldiering is concerned. I have never done this before and I'm not sure I would start by trying on my own laptop. If I were you I would re-purpose an old mobo or some other piece of broken electronics like an old router or a modem and get some training before you move to the actual motherboard.
     
    downloads, Jun 14, 2015
    #6
  7. eTriix

    eTriix Newbie

    Reputations:
    0
    Messages:
    8
    Likes Received:
    0
    Trophy Points:
    5
    Hi, in the Aspire 5820T is the U56 chip too?
     
    eTriix, Jun 14, 2015
    #7
  8. downloads

    downloads No, Dee Dee, no! Super Moderator

    Reputations:
    7,729
    Messages:
    8,722
    Likes Received:
    2,231
    Trophy Points:
    331
    downloads, Jun 14, 2015
    #8
  9. eTriix

    eTriix Newbie

    Reputations:
    0
    Messages:
    8
    Likes Received:
    0
    Trophy Points:
    5
    eTriix, Jun 14, 2015
    #9