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11 Posts

12-21-2016

Austria

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  • Message 21 of 31

Re: M900 BIOS reset

2016-12-21, 19:43 PM

SOLVED, thanks for your help guys :smileyhappy:

 

These are the steps:

  1. Burn the latest Firmware (fwj963usa.iso) to a CD
  2. Power down, disconnect all cables.
  3. Open the case and remove the case for the 2,5" drive
  4. Set the jumper from Pin 4/6 to 2/4, see attachment
  5. Add the case for the 2,5" drive and close the case
  6. Connect a external CD Drive with the CD to any USB Port
  7. Connect the monitor and the power cable
  8. Now the M900 will power up and after a short time you can hear that the CD Drive is accessing the data
  9. After this you will see that the BIOS menu is visible on your screen and the update proceed
  10. After this the M900 power down
  11. Open the case and set the Jumper back to Pin 4/6, see attachment
  12. Close the case connect all device
  13. Power on and enjoy your operating system
  14. OPTIONAL: Delete Windows and install Arch Linux or any other operating system based on Unix,Linux,BSD :-D

 

0 person found this solution to be helpful.

This helped me too

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4 Posts

10-16-2010

Canada

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  • Message 22 of 31

Re: M900x & Tiny: Recover from failed BIOS update (CMOS jumper)

2018-01-16, 20:29 PM
This method also worked for me for m92p model 3212-AV1. Thank you very much!!!
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3 Posts

10-16-2018

Ireland

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  • Message 23 of 31

Re: M900 BIOS reset

2018-10-16, 21:09 PM

I seem to have exact same issue on my M900, after BIOS update have black screen and PC is not booting OS.

 

I have tried to change the jumper from original 4/6 pin to 2/4 and doesn't help - does not boot.

 

On your pic you have the jumper 2/1 - am I doing something wrong?

 

The only thing is I have no external DVD and trying to boot from USB (created FreeDos USB using Rufus and copied all iso content into root folder).

 

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16 Posts

12-08-2019

Poland

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  • Message 24 of 31

Re: M900x & Tiny: Recover from failed BIOS update (CMOS jumper)

2019-12-08, 20:33 PM

I have similar problem with my M920x, and I have no jumper :|

I have other jumper names JP35 but default positon is in 5-6 pins. Are these cmos pins?

I tried remove battery coin and reinstall back but nothing happened.

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16 Posts

12-08-2019

Poland

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  • Message 25 of 31

Re: M900x & Tiny: Recover from failed BIOS update (CMOS jumper)

2019-12-10, 16:22 PM

For my device m920x the procedure say:

"4. Move the jumper from the standard position to the maintenance position."

But I did not find what is mean maintenace position in any documentation  :|

But I took a chance and move jumper not like in the description on the motherboard (which is 2-4 CLR_CMOS and 1-3 ME_DIS ) but like on the above photo (1-2) and it works. I heard two beeps after second restart. After that I used CD iso image of latest BIOS from LENOVO.

So probably description with jumper pins 2-4 is wrong. In my case it is for sure. 

 

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1 Posts

06-22-2020

United Arab Emirates

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  • Message 26 of 31

Re: M900 BIOS reset

2020-06-22, 10:38 AM
Thanks for ur efforts; It works for Me, M900 Model Type 10FM
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5 Posts

10-07-2020

Turkey

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  • Message 27 of 31

Re:M900x & Tiny: Recover from failed BIOS update (CMOS jumper)

2020-10-07, 12:52 PM

Hi. BIOS did not respond during updating. The screen did not come up when I restarted either.

I downloaded the current ISO - https://download.lenovo.com/pccbbs/thinkcentre_bios/fwj9b1usa.iso)  and burned it to cd. I followed the directions. 

There is a red 3 pin jumper. but there are no 2/4/6 phrases. I put the red jumper on other pins. 

I plugged the cd rom into the usb port. but it didn't boot and the screen did not come up. 

where am i doing wrong?

 

I added a photo that shows the CMOS Part.


Recovering from a BIOS update failure for M900 Desktop (ThinkCentre) - Type 10FG


Recovering from a BIOS update failure To recover from a BIOS update failure, do the following: 

1. Remove any media from the drives and turn off all connected devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. 

2. Remove the computer cover. See Chapter 9 “Installing or replacing hardware” on page 85. 

3. Locate the Clear CMOS /Recovery jumper on the system board. See “Hardware locations” on page 27. 

4. Remove any parts and cables that impede your access to the Clear CMOS /Recovery jumper. 

5. Move the jumper from the standard position (pin 1 and pin 2) to the maintenance position (pin 2 and pin 3). 

6. Reinstall the parts and cables that were removed. 

7. Reinstall the computer cover and reconnect any cables that were disconnected. See Chapter 9 “Installing or replacing hardware” on page 85. 

8. Turn on the computer and insert the BIOS update disc into the optical drive. Wait a few minutes. The recovery process begins. After the recovery process is completed, your computer will shut down automatically. Note: If the computer does not start up from the disc, select the disc as the startup device. See “Selecting a temporary startup device” on page 63. 

9. Repeat step 1 through step 4. 

10. Move the Clear CMOS /Recovery jumper back to the standard position (pin 1 and pin 2). 

11. Repeat step 6 through step 7. Then, turn on your computer

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5892 Posts

01-01-2012

United States of America

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  • Message 28 of 31

Re:M900x & Tiny: Recover from failed BIOS update (CMOS jumper)

2020-10-07, 15:19 PM

This thread is for a M900 'Tiny' system, which uses a completely different motherboard to your SFF.  And while the process is similar, the specifics of the CMOS jumper in this thread do not apply to your system, follow the instructions in the maintenance manual for the jumper for your SFF system.  Does your system not have a built-in DVD drive, could be your systems boot list is not set for USB DVD.  Use the USB drive download as an alternative.  

__________________________________________________________________________
I do not work for Lenovo. I do not respond to Private Messages for help, your questions should be posted in the appropriate forum where the information exchange may help others. If I helped you, click the 'Thumbs up' button, if solved, the 'Accept as solution'.
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5 Posts

10-07-2020

Turkey

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  • Message 29 of 31

Re:M900x & Tiny: Recover from failed BIOS update (CMOS jumper)

2020-10-07, 17:17 PM
Built-in dvd drive is present but it didn't work. The file offered for usb is in zip format. I don't know how to write to usb memory. The red switch in the photo is "CMOS clear", isn't it?
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5892 Posts

01-01-2012

United States of America

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  • Message 30 of 31

Re:M900x & Tiny: Recover from failed BIOS update (CMOS jumper)

2020-10-07, 19:47 PM

Same process as above on this page:  create a FreeDos USB drive using Rufus (defaults for all other settings), copy all files unzipped from the downloaded file.  

__________________________________________________________________________
I do not work for Lenovo. I do not respond to Private Messages for help, your questions should be posted in the appropriate forum where the information exchange may help others. If I helped you, click the 'Thumbs up' button, if solved, the 'Accept as solution'.
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