Thank you for your patience. Please try to charge the device for more than 24 hours using a different generic USB charger . After that hold down the power button for 20 to 40 seconds or until something shows up on the screen. If that doesn't work I recommend that you try to boot into the BIOS by pressing ESC repeatedly on a USB connected keyboard. If this doesn't boot the device into the BIOS then it may mean that the battery is at the end of it's life span.
Do you know if you are still under the 1 year warranty for your device?