When I press it, it just blinks and doesn't open. Do i have to hold it for a long time or something?
Lenovo yoga 500 power button?
Anna Rita
Try a restart: Hold the button in for 60 seconds and then release it.
After that, a 1/4 second hold should be enough.
chrisjbsc
When you press the power button and it blinks, the computer has gone into sleep mode. If you press it again and the computer doesn't start, you may need to press the button and hold it.
Bill