Lenovo L480 not booting but power LED is on

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Lenovo ThinkPad

Die ThinkPad-Geräte von Lenovo sind eine Reihe von Geräten, welche von Lenovo hergestellt wird. Früher wurden die Geräte von IBM hergestellt, wobei Lenovo IBM im Jahr 2005 gekauft hat.

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juliana restrepo @g0f0ndwyxr

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Veröffentlicht: 17. Aug 2021

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Lenovo L480 not booting but power LED is on

screen is blank, caps lock LED doesn’t light up
power LED and the red LED outside are on
holding down power button doesn’t do anything however the red LED blinks off and on every 7 seconds
when plugged in white charging indicator lights up
holding down power button while plugged in, red LED flashes on 3 times every 5 seconds and then turns off
this model does not have a reset hole or removable battery

please advice

Diese Frage beantworten Ich habe das gleiche Problem

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Same correct your answer how can we solve

31. Dez 2024 von Mohammed Alfaz

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jayeff @jayeff Rep: 496,9 Tsd. 11 384 1,5 Tsd. · Answer 1 · 2021-08-18T01:30:48-07:00

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jayeff @jayeff

Rep: 496,9 Tsd.

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Veröffentlicht: 18. Aug 2021

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Hi @g0f0ndwyxr ,

Try a full power refresh and check if this resolves the problem.

Here’s the procedure:

Disconnect the charger if connected and turn off the laptop.

Dis-assemble the laptop and disconnect the main battery from the motherboard. You only have to disconnect it, not remove it.

Disconnect the coin cell RTC battery from the motherboard.
Here’s the hardware maintenance manual for the laptop. Go to bottom of p.75 & then to p.77 to view the necessary pre-requisite steps and then the procedure for how to access and disconnect both of the batteries.

Press and hold the laptop’s Power button for a full 30 seconds to dissipate any residual charge from the motherboard. This will reset the BIOS which may have become corrupted preventing a normal start.

Reconnect the coin cell battery and the main battery.

Re-assemble the laptop and connect the charger.

Try to turn on the laptop and check what happens.

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6 Kommentare:

I can't do that the laptop is company property. I knew working from home was a mistake.

18. Aug 2021 von juliana restrepo

@g0f0ndwyxr Well the laptop will break even in the office, do not blame WFH.

19. Aug 2021 von Kind-hearted, spirited Man

@thesimpleguy and I could have had a replacement in a day

19. Aug 2021 von juliana restrepo

Sir mine also same problem.... please i want to connect with u

https://www.facebook.com/hareeshroyal199...

14. Dez 2021 von Hareesh Royal

@jayeff Thank you so much for this advice! I already thought I had to send in my machine, but your procedure worked perfectly.

Also the link to the hardware manual was very helpful.

To all hardware newbies: Disconnecting the internal battery is not simple. Just pulling the black tissue does not suffice, it will simply tear. You really have to push the connector out, e.g. using a small screw driver *very carefully*.

8. Okt 2023 von vebleuna

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Philips Smith @philipssmith Rep: 25 1 · Answer 2 · 2021-08-18T00:48:53-07:00

Philips Smith @philipssmith

Rep: 25

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Veröffentlicht: 18. Aug 2021

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You may try turning on the PC using another outlet, changing the charger, doing a Hard reset and checking the RAM.

Otherwise check out more methods provided in the post below.

https://www.minitool.com/data-recovery/f...

If none of these worked, it's probably the motherboard.

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Worked an absolute treat.. Initially chuffed.. but on checking battery I'm informed " No battery present ". Do I need to get back in & check both connection ports are firmly installed ? Also informing me " Power mode ( plugged in ) . Better performance "

18. Jan 2023 von John Shannon

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Lenovo ThinkPad

Lenovo L480 not booting but power LED is on

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