Nikon camera power up problem. Camera technicians?

My friend gave me his old Nikon coolpix p530 and it was working before it ran out of battery. I charged it for the first time with this ac cord thingy. That's what me friend gave me to charge it with. Whenever I try to turn it on the screen just flashes but then it turns off again

I have a video here.


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Whats HS in nikon coolpix 500?

when shooting videos, there's HD option and HS option… Whats the HS option for? What does it do?
Added (1). please consider me a dummy because i have alot to learn about cameras
and i'm not a native english speaker so please use simple vocabulary xD
thanks

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Which is a better camera out of Nikon D50 vs Nikon Coolpix P500?

which is better? Nikon D50 vs Nikon Coolpix P500?

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Camera keeps turning on and off

I have a Nikon coolpix l820 and It won't stop turning on and off constantly. I tried changing the batteries from rechargeable to non rechargeable etc. And same problem it will turn on as soon as I put the batteries in then turn off then turn on etc. Anyone ever have his problem? Is there a way to fix it?

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