I've owned this 7140 Since October/November 2015. I upgraded to Windows 10 before anything was on it, so never experienced any problems other than being within the Windows 10 operating system.

The problem is definitely random, and I haven't really been able to put my finger on exactly when to expect it. What will happen is that upon waking the tablet with either the capacitive Windows button, the power button, or opening the tablet - when docked with the battery keyboard - and the system comes out of Sleep, the screen will be on but completely black. Touch is still responsive, so is the track pad on the keyboard, where I can see the pointer. Using the volume rocker also shows the onscreen graphic for volume. There is just nothing else that shows up. Undocking and re-docking don't do anything. Using the power button to turn it off and on just turns the screen off and on, but nothing still shows up.

The only way to get this fixed is to long hold the power button to do a hard reset. Whats even more interesting is that while holding the power button to accomplish this, after a few seconds the windows prompt comes up that says "Slide down to shut down your system" and I can see my log-in page background.

I thought this was a display issue or something. I've updated all drivers and I am on the most current BIOS of A09. Anyone have any ideas? The only option given to me by Dell was to mail in the system to be under warranty.

Thanks!

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