HP pavilion Gaming laptop 15-cx0056wm

[Daggerstab]

I turned on my HP pavilion gaming laptop today and everything sounded ok led power light came on in could hear fans running as it usually would but I had only a black screen so I looked up some trouble shooting ideas and the first and only thing I did was turn it over and took out the ram and then replaced same ram card just to make sure it didn't need to be reseated replaced backing plate and powered up only this time I got a black screen with a flashing led power light and a unusual sound then normal the fans are like pulsating very slow like but it don't sound like it's starting up like it did the first time I powered up today like I said this laptop is only a year or so old and very lightly used no upgrades everything stock as can be and very well cared for never dropped never over used never goes anywhere it just sits safely in my house I can't understand why it would do this suddenly if anyone can maybe help me I would greatly appreciate it I'm a noob when it comes to computers but I'm trying to learn of course this puts a damper on that a little bit I paid a lot for this laptop and I honestly expected to get more then a year or so of use especially when it's rarely used