850w Psu

Hi guys, I hope you can help me out, in the morning I just shut down my pc entirely and today that I've tried to power it on, the mobo stay on 'green light' and the indicator says 'boot' But there's no display and after a few seconds, the monitor start to flicker 'No signal' then 'black...

I've just bought a lenovo ideapad 110. I turned it on for the first time and discovered there was no cursor and the touchpad wasn't working. After managing to get through the setup with the keys only I still can't get the cursor or touchpad to work and am unable to Check any boxes in the mouse...