Author Topic: How can access to the BIOS without Keyboard  (Read 6266 times)

mabdelouahab

  • Member
  • ***
  • Posts: 346
How can access to the BIOS without Keyboard
« on: June 18, 2016, 10:18:01 PM »
This machine was working properly, the owner access to the BIOS, and has disabled All USB Port
The problem is that Keyboard stopped working and all port USB, so how can access to the BIOS without Keyboard?














hutch--

  • Administrator
  • Member
  • ******
  • Posts: 4933
  • Mnemonic Driven API Grinder
    • The MASM32 SDK
Re: How can access to the BIOS without Keyboard
« Reply #1 on: June 19, 2016, 12:18:15 AM »
Go to the board or computer manufacturer's web site and see if there is a jumper you can set to reset the BIOS. If the BIOS is damaged there also may be a way to re-flash it from a CD if you don't have access to a USB port.
hutch at movsd dot com
http://www.masm32.com    :biggrin:  :biggrin:

mabdelouahab

  • Member
  • ***
  • Posts: 346
Re: How can access to the BIOS without Keyboard
« Reply #2 on: June 19, 2016, 01:21:54 AM »
Hi sir hutch
Go to the board or computer manufacturer's web site and see if there is a jumper you can set to reset the BIOS. If the BIOS is damaged there also may be a way to re-flash it from a CD if you don't have access to a USB port.
this is computer manufacturer's web site: How to restore my ARCHOS 140 Cesium to its default settings?

He has two solutions but they need Keyboard or mouse, also the machine does not contain CD drive (view image 4)

GoneFishing

  • Member
  • ****
  • Posts: 967
  • Gone fishing
Re: How can access to the BIOS without Keyboard
« Reply #3 on: June 19, 2016, 01:48:35 AM »
Hi mabdelouahab,

THe only way I see here is to explore motherboard - it may have a small special button "RESET" or CMOS  battary .
If not  - read motherboard specs.
HTH

mineiro

  • Member
  • ***
  • Posts: 365
Re: How can access to the BIOS without Keyboard
« Reply #4 on: June 19, 2016, 02:35:18 AM »
I was on archos site and can't find a firmware to this machine. I have read the manual and does not have a volume key to try. You can try to hold power button about 10 seconds.
But I have see a thing, at side of power suply conector have a little hole, on manual is a draw above number 1 (does not have a number on manual). You can try a paperclip on that hole.
I'd rather be this ambulant metamorphosis than to have that old opinion about everything

KeepingRealBusy

  • Member
  • ***
  • Posts: 426
Re: How can access to the BIOS without Keyboard
« Reply #5 on: June 19, 2016, 04:53:20 AM »
Have you tried to reboot and get into the BIOS through the Power Up sequence?

Dave.

mabdelouahab

  • Member
  • ***
  • Posts: 346
Re: How can access to the BIOS without Keyboard
« Reply #6 on: June 19, 2016, 04:54:12 AM »
GoneFishing, mineiro
I admit that I have never looked at was this, But I think that the solution will be in the picture 6 (Winbond 25q64fwig)

mineiro

  • Member
  • ***
  • Posts: 365
Re: How can access to the BIOS without Keyboard
« Reply #7 on: June 19, 2016, 07:34:37 AM »
I was talking about this little hole.
You have found a cmos batery on this motherboard? If yes, remove that from conector, generally have a jumper that you can short-circuit near that conector to discharge capacitor and this way stored bios data is lost, after get cmos batery back.
If you don't find that specific jumper, just wait some time without batery on conector, like some hours to discharge capacitor.

Supposing that bios firmware is good.
I'd rather be this ambulant metamorphosis than to have that old opinion about everything

mabdelouahab

  • Member
  • ***
  • Posts: 346
Re: How can access to the BIOS without Keyboard
« Reply #8 on: June 19, 2016, 02:09:57 PM »
Hi minerio
I was talking about this little hole.
it is low-power diode charger
You have found a cmos batery on this motherboard?
No, you can see Image 5, Click on it to get the real resolution
If you don't find that specific jumper, just wait some time without batery on conector, like some hours to discharge capacitor.

Supposing that bios firmware is good.
I've waited 12 hours, but nothing happened.

mabdelouahab

  • Member
  • ***
  • Posts: 346
Re: How can access to the BIOS without Keyboard
« Reply #9 on: June 19, 2016, 02:22:15 PM »
If there is an expert in circles (Image 6), I guess that the solution exists in this document, at page 06 or Page 14 , but I do not know how the application

sinsi

  • Member
  • *****
  • Posts: 1005
Re: How can access to the BIOS without Keyboard
« Reply #10 on: June 19, 2016, 10:56:36 PM »
There should be a battery for the CMOS, maybe it is on the other side of the board?
Disconnect the battery (top right of pic 6, under BAT), power adapter and CMOS battery (if it exists), hold the on/off switch down for 15 seconds.
With any luck the CMOS will load defaults. Might need a few tries.
I can walk on water but stagger on beer.

hutch--

  • Administrator
  • Member
  • ******
  • Posts: 4933
  • Mnemonic Driven API Grinder
    • The MASM32 SDK
Re: How can access to the BIOS without Keyboard
« Reply #11 on: June 19, 2016, 11:58:52 PM »
taking out the CMOS battery is a good choice and replacing it with a new one is an even better choice. Often the CMOS batteries used in computers are junk and its worth spending a few bucks to buy a better quality one.
hutch at movsd dot com
http://www.masm32.com    :biggrin:  :biggrin:

sinsi

  • Member
  • *****
  • Posts: 1005
Re: How can access to the BIOS without Keyboard
« Reply #12 on: June 20, 2016, 12:05:07 AM »
Have you tried to reboot and get into the BIOS through the Power Up sequence?

Dave.
Missed that, the keyboard should work initially, try pressing del or F2 (or esc, or ...) when you power on.
I can walk on water but stagger on beer.

Adamanteus

  • Member
  • **
  • Posts: 182
    • LLC "AMS"
Re: How can access to the BIOS without Keyboard
« Reply #13 on: June 20, 2016, 01:00:59 AM »
 To clear CMOS is deal to read firm repair manual - as used there is special chapter for it, with detailed instructions how to access jumpers, or ask authorized repairs for code to restore BIOS - more prefferable.

mabdelouahab

  • Member
  • ***
  • Posts: 346
Re: How can access to the BIOS without Keyboard
« Reply #14 on: June 20, 2016, 02:53:09 AM »
There is no jumper , no CMOS battery, and this is two face  Mainboard (5 mb)