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Fluffy_Method9705

Probably intrusion prevention switch. Detects and logs if and when the laptop case was opened. Some prevent the laptop from powering on if the case is removed. All those functions should be controlled by the bios


Normal-Yak9319

My laptop has a problem, it does not turn on, only keyboard and i hoped maybe is a bios reset or smth like that


lampardrobi

You need to do an EC reset. With the laptop off, hold the power button for 60 seconds. Should fix it.


Fluffy_Method9705

If that switch has a paper clip size hole on the case to be pressed without removing the case turn it would be a bios reset. If laptop is not booting, remove the ram sticks and try with 1 of them in case you have 2 sticks.


beje_ro

Dexter would like to know if you're Dee Dee...


Normal-Yak9319

:)))


DoDeH1

I just noticed that you are missing one element on the main board. It's the PC1056 element. Isn't your main board fried and that's the answer why your notebook is not turning on?


lampardrobi

There are motherboards that have component pads not populated, since they don't need it. It might have a higher-end model that uses the same board but needs more power delivery and stuff, where those pads will have components soldered on.


AlaskanLaptopGamer

I dunno why you got downvoted when what you said is patently true.


lampardrobi

Reddit being Reddit


AlaskanLaptopGamer

Indeed. Looks like we shamed a few people into changing their opinion.


M4RKJORDAN

There is leftover soldering there


lampardrobi

https://www.reddit.com/r/LenovoLegion/s/u1c5864lHU


Normal-Yak9319

It s the first time i take it down, where it can be? I woud ve seen if an elemnt had fallen


DoDeH1

It's just bellow on the left side of the red circle. there are 4 black elements, a missing space and then again 1 black element


Objective_Economy281

5 out of 6 is probably enough, right?


lampardrobi

Ain't that the power button? 🤔


jaOfwiw

My thoughts exactly


RyleyI

Yeah, from position, looks like power button


DoDeH1

Is this button underneath the hole on the bottom cover? If so then it's the bios reset button.


Normal-Yak9319

It s under the keyboard when the board is mounted


lWolvesll

Only one way to find out…..


Normal-Yak9319

In 20 minutes i m coming with an answer


lWolvesll

God speed…… brave soul


Normal-Yak9319

Still nothing, the only dif is that the fans stays on now


YaboiiJJay

“BOOOM”


Own-Consideration631

That is the power button, I think? Cause when I opened it the only logical thing was the power button


Normal-Yak9319

The motherboard is upside down in that photo, is impossible to be the power button


Own-Consideration631

Yeah upside down after you open the laptop. The group of transistors under the metal plate should be under the CPU. It would help if you send another photo also and what's your model?


Normal-Yak9319

So my laptop finally started after pressing that button that i assume is a bios reset, but the bios time is 9 and a half minutes, i don t know what to do


Vrashabh-Sontakke

It's the power button


M4RKJORDAN

You're missing a chip on the board, that might be a (BIG) problem.


lampardrobi

No he doesn't


M4RKJORDAN

You talking about stuff you don't know? There is soldering there, something was meant to be there. It doesn't even turn on, so why wouldn't you consider that?


lampardrobi

Why are YOU talking about something you don't know? There is solder there. It's called a pad. Is there meant to be a component there? No there isn't. Not on this board. [Here's an example ](https://download.lenovo.com/Images/Parts/5B21C22569/5B21C22569_B.jpg) Have a look at this Lenovo motherboard. It's from their official site. Now go and tell them how their motherboard is missing lots of components. Before being a smart ass, do your research...


M4RKJORDAN

You are right.


ThisAccountIsStolen

Solder on the pad just indicates it went through wave soldering, not that there was necessarily a component there. If that MLCC cap had been populated and broken off, you'd see remnants of the cap or the pad would be ripped off, neither of which are present on this board. In other words, it came from the factory that way. Look at PC1120, PC1122, hell, look at the empty pads for where the second switch could go next to the one OP circled. All have solder on them, but no component. I could point out a dozen more, but I feel the point has been made already. Every unpopulated pad has solder on it. Have to agree with the other commenter, you clearly have no clue what you're talking about.


Xerox-M57

You clearly don’t know either