blue light blinking no boot

Hello

After a few weeks of perfection, my lattepanda doesn't boot anymore

I use the original power supply and cable

Removed power
Inserted power: blue led blinking + Red steady led
Blue led off
Pressing power for 1sec
Red led on + screen flicker
Then Red led off

If I press power again, blue led blinks 14 times and nothing happens

Will try reimaging tomorrow...