Yesterday using standard tablet wireless display software I did tablet screen off manually, later when I lose wireless connection and found what no way to make tablet start because screen still be off position. As result no aces for Login, Start screen or reset even screen goes on couple of seconds when DELL welcome screen reflect power button restart mode.

1. Hit the power button 10 sec - Shut down the Venue 8 Pro
2. Hit the power button again 2 sec - you will see 15 sec the DELL welcome screen when screen goes dark/black but tablet is still on.

Is Any ideas how I can fix it?
Can anyone help me do a hard reset without screen?
Anyone else seeing this?
Is Dell aware of this?