Dell Inspiron 15 laptop booting problem - starts up and switches off?

I recently got a new laptop from an online retailer which is very famous worldwide for it's best service and classy products called as flipkart.com. The company of the laptop was Dell and the model number was a Dell Inspiron 15. I has been a week or more than a week i bought it. The laptops was working well but from the past day it has started giving a serious problem.

When it get started, it shows the boot screen, then switches off, then again shows the boot screen. Keeps repeating. I have no idea what to do. Please help me what should i do?

First of all in this situation check the AC adapter. You can test the output voltage with a voltmeter. If you cannot do that, find a known good AC adapter and use it for testing the laptop. It is possible the laptop appears to be dead because the AC adapter is bad (and the battery is discharged).

I hope it help.