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3 Posts

08-16-2015

Alberta, Canada

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W540 does not start up on battery power

2016-01-23, 17:40 PM

I can't start my ThinkPad W540 without connecting to AC power (not always, but most of the time). When I press power bottom nothing happens even the battery is fully charged. As soon as I plug the laptop on to AC power, the power bottom works, and I can unplug the AC power immediately after it starts up. I believe this problem started after upgrading from windows 8.1 to windows 10, however, could it be a hardware issue? 

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8360 Posts

01-13-2008

US

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Re: W540 does not start up on battery power

2016-01-23, 18:16 PM

Hello and welcome,

 

Unlikely but possible: defective power switch making partial contact.  Does the switch look out of whack?  Slightly depressed or raised.

 

Happened to me pretty much exactly as you describe.

 

Z.


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The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored - questions and answers belong in the forum so that others may contribute and benefit. ... GeezBlog

 

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3 Posts

08-16-2015

Alberta, Canada

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Re: W540 does not start up on battery power

2016-01-26, 10:12 AM
power switch is ok.
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1 Posts

04-18-2016

US

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Re: W540 does not start up on battery power

2016-04-18, 18:39 PM

same thing happens on my t440p. look up how to reset the surge protector on your battery. it is most likely that or the surge protector on the motherboard which is a little more serious... unfortuneatly i think mine is of the latter. hope that helps and can solve your problem

 

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