Lenovo S10 Series Turns on But The Screen Stays Black?
Take out your battery and hold down the power button for 60secs... This will release any excess charge built up in the machine.Put the power back on but without the battery,just plug the adapter and if it turns on then you know what's wrong.You need a new battery.Make your laptop light.Make sure you don't have anything attached to the Laptop and then restart.
It could also be your hardware [motherboard,graphics card,screen] problem,if you can,try tightening the screen connection from inside.
If that also doesn't solve the problem then you need to go to the company service center.