I upgraded the tablet to Windows 8 Pro. Our volume license key wouldn't' work with the quick upgrade to pro within Windows. I had to reinstall the OS completely to get Windows 8 Pro on there.

Everything is working well, I was able to get all of the drivers loaded. BUT the screen wont actually turn off. If i hit the power button the screen goes black. At first glance it might appear to be off but it definitely is all black.

I spent awhile searching this forum and google and no luck. I tried running powercfg from the command prompt to disable all devices that can wake from sleep. I've double checked to make sure all devices have drivers. I've checked all power and display settings. I'm not sure what i'm missing! This is completely killing the battery. After 10 hours charging i'm only at 50%!

Any suggestions? Thanks in advance!