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  1. Joined : Aug 2016
    Posts : 36
    Windows 10 Pro 32-bit
       1 Week Ago #1

    A few questions about resetting the BIOS settings.


    Hey,

    What is the proper way to short the CMOS jumper on a laptop motherboard if I don't have that thing that goes on it?
    Also, when doing a BIOS recovery (this laptop's keyboard is broken and I can't use the Fn key) can I use an external normal-sized mechanical keyboard that doesn't have the Fn key to start the recovery? And what's the key/combination?
      My System SpecsSystem Spec


  2. Joined : Jun 2016
    Los Angeles
    Posts : 395
    Windows 10 Pro
       1 Week Ago #2

    Please tell us the Laptop Make and Model#. Your profile mentions an HP desktop.
    You can get a new keyboard for your laptop from Ebay
    What is the proper way to short the CMOS jumper on a laptop motherboard if I don't have that thing that goes on it?
    What "Thing" are your talking about? the Jumper pin? Why do you need to short the CMOS?
    Can you boot into Windows? If so, you can go to Settings/Update and Security/Recovery/Advanced Startup/Restart Now and choose to enter Recovery partition.
    Depending on the make and model # of your laptop, there are other ways to enter recovery if you cannot boot into Windows. On an HP, you would press the ESC key. On a Dell or Acer it might be the F11 key.
      My System SpecsSystem Spec


  3. Joined : Jun 2015
    UK
    Posts : 1,152
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)
       1 Week Ago #3

    I would try loading the BIOS defaults from the BIOS before resetting the BIOS on the motherboard. There may be a reset switch or button on your motherboard. If not, you can remove and replace the CMOS battery if you don't want to short the jumpers.
      My System SpecsSystem Spec


  4. Joined : Aug 2016
    Posts : 36
    Windows 10 Pro 32-bit
       1 Week Ago #4

    spunk said: View Post
    Please tell us the Laptop Make and Model#. Your profile mentions an HP desktop.
    You can get a new keyboard for your laptop from Ebay
    What "Thing" are your talking about? the Jumper pin? Why do you need to short the CMOS?
    Can you boot into Windows? If so, you can go to Settings/Update and Security/Recovery/Advanced Startup/Restart Now and choose to enter Recovery partition.
    Depending on the make and model # of your laptop, there are other ways to enter recovery if you cannot boot into Windows. On an HP, you would press the ESC key. On a Dell or Acer it might be the F11 key.
    It's an Acer Aspire 5745G and I need to do it because my friend messed up his BIOS settings and now the laptop boots but nothing comes up, it's just a black, dead screen. There's no CMOS battery on the motherboard and there's a little, white 2 pin thing which I assume is the jumper, though I'm not completely sure, it could be something else. If you want, I can upload a picture of it.
    Now I'm gonna try to do a BIOS recovery with the F11 key you've mentioned, hopefully it'll work.

    EDIT: The external keyboard for some reason doesn't work immediately when I boot the laptop, I have to wait around a minute for it to light up and be functional. I think because of that I won't be able to do the recovery.
    So, I guess shorting the jumpers, assuming there are any, is the only way to fix this problem. Or to just throw it in the trash.
    Last edited by BicycleRow; 1 Week Ago at 08:58.
      My System SpecsSystem Spec


  5. Joined : Oct 2016
    Posts : 48
    Windows 10 Pro Build 1607
       1 Week Ago #5

    On the Acer 5745G when your laptop starts you should be able to enter the BIOS by pressing F2. You may have to press more than once. Say three four times.

    I assume this did not work for you. Correct?

    Once in BIOS F9 restores defaults, then F10 to save.

    Your manual has an error message for CMOS battery dead. According to docs CMOS battery is right beside wireless card and right below memory. It may be covered in black protective material, shaped like a coin. You should see it right after you take cover off.
      My System SpecsSystem Spec


  6. Joined : Aug 2016
    Posts : 36
    Windows 10 Pro 32-bit
       1 Week Ago #6

    Caledon Ken said: View Post
    On the Acer 5745G when your laptop starts you should be able to enter the BIOS by pressing F2. You may have to press more than once. Say three four times.

    I assume this did not work for you. Correct?

    Once in BIOS F9 restores defaults, then F10 to save.

    Your manual has an error message for CMOS battery dead. According to docs CMOS battery is right beside wireless card and right below memory. It may be covered in black protective material, shaped like a coin. You should see it right after you take cover off.
    I took out the whole motherboard and there is no CMOS battery anywhere on it. And correct, F2 doesn't work, and that's because the external keyboard is not working immediately after boot, as I said.
      My System SpecsSystem Spec


  7. Joined : Jul 2015
    Posts : 6,407
    Windows 10 Pro
       1 Week Ago #7

    BicycleRow said: View Post
    I took out the whole motherboard and there is no CMOS battery anywhere on it. And correct, F2 doesn't work, and that's because the external keyboard is not working immediately after boot, as I said.
    I guess this is not the laptop in question:
    How to disassemble Acer Aspire 5745 | Inside my laptop

      My System SpecsSystem Spec


  8. Joined : Aug 2016
    Posts : 36
    Windows 10 Pro 32-bit
       1 Week Ago #8

    It looks the same, only the CMOS battery is not there.

    That's the 5745, the one I have is the 5745G.
      My System SpecsSystem Spec


  9. Joined : Oct 2016
    Posts : 48
    Windows 10 Pro Build 1607
       1 Week Ago #9

    Wow. I found this video. Basically I searched for our to remove password from Bios. Interesting the battery is under wireless card in this video for Acer 57**. Did you by chance remove wireless card? Then he shorted the leads in battery slot to reset BIOS.

    How to remove BIOS password for Acer Aspire 57** Series - YouTube
    Last edited by Caledon Ken; 1 Week Ago at 10:13. Reason: I can't spell
      My System SpecsSystem Spec


  10. Joined : Aug 2016
    Posts : 36
    Windows 10 Pro 32-bit
       1 Week Ago #10

    Caledon Ken said: View Post
    Wow. I found this video. Basically I searched for our to remove password from Bios. Interesting the battery is under wireless card in this video for Acer 57**. Did you by chance remove wireless card? Then he shorted the leads in battery slot to reset BIOS.

    How to remove BIOS password for Acer Aspire 57** Series - YouTube
    I've already watched that video, and tons of others but none of them match the one I have.

    See for yourself:

    (Sorry for the bad quality)
    Click image for larger version. 

Name:	IMG_20161201_194904_1.jpg 
Views:	8 
Size:	1.37 MB 
ID:	112121

    I suppose that white 2-pin thing is the jumper that has to be shorted, though I tried but nothing happens.
    Click image for larger version. 

Name:	IMG_20161201_200117_1.jpg 
Views:	3 
Size:	1.13 MB 
ID:	112123
    Last edited by BicycleRow; 1 Week Ago at 15:17.
      My System SpecsSystem Spec


 
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