I've Lenovo Ideapaid 110 laptop, (amd a8 7410 version)
The thing is battery's BMS died, I've tried looking for the battery but it isn't available anymore, So i changed the battery cell, But i've noticed that those old batteries are fine too, The BMS has problem, there's no input or output. 

So right now I can't use this laptop with AC plugged in, If i press power button without the battery plugged in, nothing happens, there's no light indicator either. 

Is there any way to turn on this laptop without the battery, Is there is something hidden in the motherboard to short the connection to do so?

If someone has any Idea please let me know, The whole laptop is unusuable because of the battery issue. 

Greetings and hello.

Lenovo machines are expected to power up as long as there is a power being supplied to the board coming either from the battery itself or the OEM ac adapter. Other than this, the device is surely not going to power up without these.

Regards.
Dex

Yes I understand, Even though there is no power coming from the battery since it's dead, I've powering it with AC adapter, but the laptop won't turn on with the AC adapter, Like every other normal laptop. 
I've tested the voltage and everything of the adapter, and power being transferred into the laptop from ac adapter. but the laptop still won't turn on. 

I assure you that the laptop is fine, Because the battery (BMS) started facing problem months ago, it won't charge but i could still use the laptop directly from ac adapter, It should me that Battery is plugged in but not charging. Now BMS us completely dead, but everything else is fine 

So i was looking for a way to use this laptop just with AC adapter without the battery. Do you know any way to turn on this laptop only with AC adapter plugged in?

Thanks,

Hi,

I admire the steps tested and performed for the device.

I still believe that there is no other way to power up the device without a proper battery.

Some design model may require battery for the cboard circuit, a replacement battery maybe needed similar to how users has discussed about it in this thread. 

Regards.
Dex