Turns on then shuts off immediately

My PS3 Fatone(not sure off top of head the GBs), that I've had for 7+ years, whilst just starting an Episode on Netflix, not 5 minutes into show, but not sure of how long I had the console on before hand, but when it was on before had was just running idly by, it beeped 3 times either before, during, after it shut off, followed by flashing red light, and no response from controllers. The console will switch to a steady red light once you press the power button on front once, then press it again to start it up, within seconds will do the same 3 beeps shut off, the color of light goes from green starting up to red pretty quick when it starts to shut off, so don't believe it shows yellow.