MacBook Pro stuck at full loading bar

Sorry for my bad English

I have a Mid-2012 13" MacBook Pro with a defunct display that I rarely shutdown because it takes too long to boot, at one case it ran out of battery when in sleep mode and when I charged it and booted it up again, it played the chime, and immediately displayed the Apple logo with a halfway loaded progress bar, but even when it loads at 100% it is stuck there forever.

The MacBook is connected to a desktop monitor through VGA

• I tried resetting the SMC but nothing changed
• I tried booting into safe mode but I get a long blank screen then the Apple logo and the halfway loaded progress bar
• Finally I tried resetting the PRAM, now it no longer outputs to the monitor, and all I hear is the boot chime when I turn it on and that's all, even when I press the CAPS LOCK button it doesn't light up

Any way I can fix this ?