Lumia 925 not turning on, windows logo blinking once every +- 15 seconds

[Windows Central Question]

So last night my phone didn't turn on at all, even after one hour of charging no reaction. I tried doing a soft and hard reset, it vibrated both times but still... nothing. After letting it charge for one night I tried to turn it on. It vibrated and the windows logo blinked, but still nothing happens. Do I just have to charge it for longer or do I have to try the windows recovery method. I really don't want to reset the phone. Any other solutions?

 

[Maurizio Troso]

So last night my phone didn't turn on at all, even after one hour of charging no reaction. I tried doing a soft and hard reset, it vibrated both times but still... nothing. After letting it charge for one night I tried to turn it on. It vibrated and the windows logo blinked, but still nothing happens. Do I just have to charge it for longer or do I have to try the windows recovery method. I really don't want to reset the phone. Any other solutions?

Windows Device Recovery Tool