Why won't my laptop turn on?

Hi,

I've got a Lenovo Thinkpad Yoga 11e. I got it at the start of the year and it's always been fine with turning on. I've had it restarted and wiped two times. I normally just close the lid and let it sleep instead of shutting it down completely but last night I decided to plug it into charge and 'update and shut down' as my laptop kept telling me it needed to update. This morning I unplugged it but it wouldn't turn on. I've tried holding the button down for ages or just pressing it quick before letting go but nothing will work. When I plug it in the little light on the 'i' in the word 'Thinkpad' flashes 3 times in red. I've also tried different power points just in case it was the power source that wasn't working but it still won't turn on.

Please help asap because I need my laptop back!