Dell Inspiron burning up after 1 day of use

I purchased a Dell Inspiron less than 30 days ago at best buy in Harahan, Louisiana. I needed the laptop to take the bar exam and was going to give it to my son afterwards. I purchased Microsoft and Mcafee to protect the device. Today I plugged it in (for the first time as I take my HP to school) and the laptop and charger are hot to the touch. The salesman worked for Dell and was so busy trying to make a sell he didn't care to mention that the computer is a hot box, flooded with problems. I can't afford my laptop exploding during the bar exam or freezing or harming my child for charging it. It is past the 15 days to return the product so I will have to spend another $1,000 on a new HP. I don't game, I don't know how to change the setting on the battery and shouldn't have to. I purchased the computer to complete basic functions, it is unreasonable to change every setting on the laptop for it to complete basic functions like charging.