Blink led

I'm having trouble with my laptop again, it powers on but shows no display, i cleaned my old ram and tried it but still nothing, then i bought a new ram but it still won't turn on, the fan would spin for a second then it would turn off, but i could hear the hard drive spinning normally After a...

Using Asus UX305F . Suddenly blank black screen. It shuts down I had try to press power button on it shows Blink White Led on power button & caps lock. Only once & still did not switch on. I had been using it with power adapter & plugged with extension cord before this suddenly happened...