Laptop not turning on

Hi, Could not find exact device. I have a thinkpad Yoga S1 20cd that will not turn on.

When plugging in the charger, the light blink as if charging.

I suspect it may be a problem with the power button itself, as it seems ‘stuck’ in ‘pressed’ mode, ie it’s 1-2 mm further into the laptop than it should be, and it doesn’t press or depress further than that. (power button on the side just like the s3)

How can one troubleshoot this. Any thoughts?

Thanks