RE: My Inspiron 15 won't turn on
Hi Fried Mind,
I am still unable to verify the exact system model.
The issue could be related to the motherboard of the system and may need a replacement.
Also as you have mentioned in your initial post that the system was purchased on July 18, 2013, the system should be under warranty if it was purchased new.
You may check the warranty on your system and the exact system model by entering your service tag on the link below.
The link is http://dell.to/1eZmZmo.
Enter the service tag and go to ‘Warranty’ Tab, to check the current warranty status of your system.
Keep me posted with the information. I will be glad to assist you further.