xps 13 9360 post failing

I keep having an issue whereby my laptop will fail to post. The dell logo will pop up, but only very faint, then the screen will just go blank and i have to hold the power button i to reset the machine. Once ive done this a few times it will sometimes decide to come to life. The machine is about 5 months old, should i be looking to RMA it or is has anyone experienced this issue before?