Lenovo Yoga weird problem

[Kill_Shot]

I have a Lenovo Yoga 720-15ikb that doesn’t like to turn on for more than two seconds. Sometimes I have to disconnect the battery and then it will boot, sometimes I have to disconnect the battery, try booting, and reconnect the battery for it to boot. Sometimes it just won’t turn on at all. There is no real consistency to it. the Windows 10 battery tester showed that the battery was good, it is running off the battery as of this post. I have downloaded BIOS updates from Lenovo and they have not helped. I got this laptop secondhand (it wouldn’t work for the last owner). This laptop has been wiped multiple times.

[Bruce]

any chance it’s under warranty still, even extended warranty?

does it reliably boot if the battery is always left out?

[Kill_Shot]

any chance it’s under warranty still, even extended warranty?

does it reliably boot if the battery is always left out?

No longer under warranty, and no it does not relaibly boot without the battery.

I’m figuring BIOS but I just downloaded the newest ones from Lenovo and it still did it.

[Bruce]

for me, the issue doesn’t sound BIOS related, more hardware related.
could be anything from the power pack itself, to the jack it plugs into, to the power circuit board in the laptop the jack connects to.
or it could be more fundamental - the motherboard.

does the battery charge when installed and mains power connected?

hope you got it for a real good price? :unsure:

[Kill_Shot]

for me, the issue doesn’t sound BIOS related, more hardware related.
could be anything from the power pack itself, to the jack it plugs into, to the power circuit board in the laptop the jack connects to.
or it could be more fundamental - the motherboard.

does the battery charge when installed and mains power connected?

hope you got it for a real good price? :unsure:

Yes, the battery charges when the power cord is plugged in. When I push the power button (when it doesn’t turn on) the power button wll light up for about twenty seconds (even though the rest of the computer is completely off, fans and everything) unless I press any key on the keyboard which will turns off the power light regardless of how long it’s been on.

[Kill_Shot]

I have used three different power supplies on this laptop and the problem persists with all three of them, I haven’t inspected the power input though.

[Bruce]

sounds like a fault that is outside the normal “have you tried turning it off and on again” options available to mere mortals.

I’d be thinking it’s time to take it to your nearest authorised Lenovo repair centre and get it looked at professionally.
be prepared for them to most likely say “it’s the motherboard” or the the repair to be on par with the cost of a new unit.

in other words, unless you get lucky with a fix, this is most likely the death knell for the laptop.
so, nothing to loose, open up the back cover and see if anything stands out. but that in itself is a Catch-22 when you don’t know what to look for.

[Bruce]

@Kill Shot - any update?

[Kill_Shot]

@Kill Shot - any update?

My apologies for not getting back to you until now. The laptop in question started (as of yesterday) to automatically shut off within a minute of booting, I believe that it is a bad capacitor somewhere on the mobo and will possibly be having it repaired by a guy I know or being taught how to do it by the same guy. Thanks for your help.

[Kill_Shot]

I need to learn micro-soldering anyway as I do simple repair to computers, just hate that it had to be this laptop that pushed me to it lol.

[Bruce]

sounds like a plan.
will close this for now.
PM any staff member when you have news and it can be re-opened.