I'm guessing you had SD in there and connected usb cable, it attempted to boot form sd and locked up with nothing happening on screen. Just tried it on the 8gb that I have here (just opened box this minute)
If thats the case all you need do is remove sd card, remove USB cable and hold power for 15 seconds. Then wait a couple of secs and power it back on with the power button again. If like mine it will boot back up fine and isn't bricked.
If I've helped you out no need to post saying thanks. Just click the button to thank me.
Thank you for your donations, They'll be used towards buying another device to play with
If you'd like to donate to Team-B (Thatís Myself and Goncezilla)
If you require support, wish to report a bug or just wish to comment on NT CM7 please post on the thread available by click HERE