SVF143B1YW - Laptop Vaio Touchscreen won't power on, no lights, no dispplay, no sound

Hi

I was using my laptop when it shutdown, but before shutting down it made a short beep fading sound.

Charger is working.

Tried charding it with and without the battery for hours but still no sign of power.

SVF143B1YW

Touchscreen

Windows 8.1

Apprecite the assistance.

Many thanks!