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Hp probook 450 G2
Microsoft Windows 10 (64-bit)

I have the following issue :

The caps lock is solid white ( continuous, not blinking) 

The charging port light is blinking white 

Both of the above happens right after I attach the removable battery or even if I plug the charger to the laptop (without the battery attached).

There is no light on the power switch, and pressing it does not do anything. 

I have tried all the basic steps including replacing the CMOS battery on the motherboard, tried turning on with only the stock RAM. 

I am clueless what to do now. 

The laptop does not want to turn on. 

Another thing is, when I do attach the removable battery, the exhaust side becomes warm after a a few minutes, maybe the processor is powering up ? 

Please let me know what can be done with my laptop now. 

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