M14X cuts off randomly and wont cut back on.

Hello, as of late my M14x will randomly shut itself off, and I can not get it to cut back on. I press the power button and nothing happens. I checked the power cord, unplugged it and connected it again, still no help. I step away from the machine and from about 10 to 15 minutes later,,it reboots and turns itself on. I do not think it is a heat issue because of the cooling pad i have on it, but I can not figure this out. Any ideas?