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2 Posts

03-26-2021

United States of America

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W540 errors 0251 and 0271

2021-03-26, 15:11 PM

Greetings,


W540 will not turn on.

 

Unit shut off unexpectedly after beeping while unattended. Turned on- displayed 0251: System CMOS Checksum bad. Attempted to adjust date and time in BIOS, but unit would not boot.


Replaced CMOS with a used battery of the same voltage known good from another unit. Was able to boot unit once, adjusted date and time, and ran operating . Unit shut down unexpectedly. Unit will not turn on. Yes, I held down the power button for a minute with power sources removed.

 

current behaviors-

 

 

- Adapter plug only(LED on adapter on) press power button- power button blinks 3 times, no fan, no screen.

 

- plug in adapter with laptop battery removed- 3 blinks

 

- plug and laptop battery- 3 blinks

 

- -> laptop battery only- no blinks

- removed CMOS- 3 blinks. reinstalled.

- removed RAM- 3 blinks. reinstalled.



 If the laptop battery failed- why would it display time clock errors?

Any help appreciated.
 

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2074 Posts

01-08-2021

Philippines

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Re:W540 errors 0251 and 0271

2021-03-26, 16:51 PM

Hello CNYnewbie,

 


Welcome to Lenovo Community

 

 

Error 0251 is related to CMOS battery, 0271 is about BIOS date and time settings.
Can you check the CMOS battery
https://pcsupport.lenovo.com/ph/en/products/laptops-and-netbooks/thinkpad-w-series-laptops/thinkpad-w540/20bg/parts/display/compatible

It should be a compatible model, otherwise it could cause problems.

Update us soon as convenient

 

 

Regards, 
Lorenzo_Lenovo



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2 Posts

03-26-2021

United States of America

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Re:W540 errors 0251 and 0271

2021-03-26, 17:06 PM

Yes, it's a 3V CR2032, Mitsubishi.
It had been working fine with this battery previous to this incident.

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2074 Posts

01-08-2021

Philippines

142 Signins

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Re:W540 errors 0251 and 0271

2021-04-13, 18:38 PM

Hello CNYnewbie

 

Sorry for the late reply.

I would suggest to contact the tech support (if machine is still under warranty) or your trusted local computer technician.

Possible points of failure could be motherboard, BIOS or power supply.

 


Best regards, 
Lorenzo_Lenovo



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4073 Posts

12-02-2007

United States of America

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Re:W540 errors 0251 and 0271

2021-04-14, 8:58 AM

Hello,

 

Have you tried removing the second, used CR2032-type battery and replacing it with a new one?

 

Regards,

 

Aryeh Goretsky

 



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