Staylor90 :
genz :
You're HDD has most likely burned out, it's that or your socket and you should pray it's the former else you'll need a new laptop entirely.
Are you sure. the laptops only 3 months old
Some machines fail before they even get to your door, some fail after the first week. It's the nature of a mechanical disk, all things of a mechanical nature fail, sometimes very quickly. It also depends on the conditions. For example if you keep your machine on 24/7 and you have power settings set to high performance mode in Windows your Hard Drive will build heat. Same if you usually sit it on surfaces like duvets which absorb heat (staying warm for long periods) and often block the ports. If your Hard Drive is sitting in a space that's over 40C then it will fail far faster than if it was sitting at room temperature.
Laptops are especially susceptible to this as they are built to use as little space together and as a result they often have frankly inadequate cooling as a result. Hard Drives are very overlooked as a good bath will still run for a year or two when far over safe temperature.
Your best bet to eliminate the HDD as a problem (but not the socket), is to find a desktop PC hard drive and a sata cable and see if it will pass POST with that connected to the SATA port. Use Youtube to find a guide to open your Laptop safely, but remember this will most likely break the seal and invalidate your warranty, so if you still have some sort of guarantee just RMA it.