USB debugging doesn't work - switches off automatically
I had same issue, if you follow these steps you should be able to see your device.


Install SAMSUNG USB Driver v1.5.33.0 from here.
Restart your PC. 
Connect qolo q800 and enable USB debugging. 
Go to device manager and click on update software
Choose browse my computer for software. Then choose 'let me pick'
Choose adb interface


Thats it. Open eclipse and make your minimum SDK is 4.2.1(API level 16) or below.