Try unplugging it. Let it sit for 10-15 minutes before plugging it back in. It has to do with the console's internal battery.
Also check your HDD. You should be seeing that amber HDD blinking right when you turn on your console.
If you don't have a spare 2.5" SATA HDD, not much you can do other than remove the HDD caddy, remove any dust from the HDD bay and HDD connectors and then plug the caddy back in.












