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2 Posts

12-28-2015

Ohio

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T450S won't boot, power button flashes 3 times

2015-12-28, 13:25 PM

I have a T450S that is a few months old. It has worked fine until just the other day when it would not turn on.

 

When I push the power button, the green LED flashes three times. Then, the LEDs on the F1, F4, and Fn keys come on for several seconds and go off.

 

Here's what I've tried:

- Charging for an extended period.

- Removing the battery for an extended period.

- Removing the battery and holding the power button for 60 seconds.

- Pressing the button in the emergency reset hole.

 

Nothing has made any difference. Any ideas?

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2 Posts

12-28-2015

Ohio

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Re: T450S won't boot, power button flashes 3 times

2015-12-28, 14:41 PM

Update: I called Lenovo support and am sending it in for repair.

0 person found this solution to be helpful.

This helped me too

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1 Posts

07-12-2016

US

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Re: T450S won't boot, power button flashes 3 times

2016-07-12, 17:29 PM

my t440 is acting the same way any solution after sending in.. i tried static discharge removed internal battery

 

this only statered happening after enabling virtulization and updating to windows 10

 

your advice will help

 

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1 Posts

01-16-2017

US

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Re: T450S won't boot, power button flashes 3 times

2017-01-16, 17:33 PM

Hey kolyur,

 

I know I'm late to the party, but I just wanted to reply incase anyone else is searching for the solution to this same problem.

 

My IT department started deploying T450s to users last year. We have a bunch of them run into this problem (pretty often, actually). I'm not sure what causes it, but our quick fix is to reset the CMOS. Just disconnect it from the mobo, wait a couple seconds, then plug it back in. After that, it boots up perfectly fine.

 

Since we don't know what causes it, unfortunately I don't have a long-term solution to possibly prevent this from happening again.


Anyway, I hope this helps someone!

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1 Posts

02-12-2017

SA

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Re: T450S won't boot, power button flashes 3 times

2017-02-12, 8:00 AM

The sol is perfect i have tried it working fine

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1 Posts

02-13-2017

US

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  • Message 6 of 28

Re: T450S won't boot, power button flashes 3 times

2017-02-13, 17:50 PM

Confirmed "quick Fix" (CMOS Battery removal/replug) -  It seems that when the laptop goes into "sleep" mode, the battery drains out and won't come back.

 

I've had 4 of the T450's in a drawer do this that were apparently on sleep and battery drained.  

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1 Posts

12-15-2017

CA

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  • Message 7 of 28

Re: T450S won't boot, power button flashes 3 times

2017-12-15, 23:33 PM

Thank you HashyB. I tried your solution and it worked! Was ready to pay over $500 for a new motherboard.

 

Thanks again, WG

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1 Posts

04-16-2018

US

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Re: T450S won't boot, power button flashes 3 times

2018-04-16, 13:25 PM

That worked perfectly !!!

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1 Posts

07-20-2018

US

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  • Message 9 of 28

Re: T450S won't boot, power button flashes 3 times

2018-07-20, 0:49 AM
Your solution worked like a charm on an Ideapad 110.. thank you
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371 Posts

05-28-2017

CA

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  • Message 10 of 28

Re: T450S won't boot, power button flashes 3 times

2018-07-21, 18:09 PM

check for a BIOS update for the machines

I own: T400 T500 X220 X230 all running Windows 10 Professional
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