Nexus 7 Infinite loop?

I just bought new Nexus 7 (2013). After input all the information (g-mail account info, and wireless connection), I was browsing through pre-installed apps. While I was checking camera quality, screen froze for brief second and the device turn itself off all the sudden. Since then it stuck at X-logo and I don’t know what to do. Tried “Restart boot-loader” process but it doesn’t work.
Anyone know what to do?

by the way, I have all the original items (wall adapter, cable, manual and device) but binned all small paper casing inside the box. Do you think I can still return it @ bestbuy?