Black screen on phone (not starting)

[MaxF3]

I hope someone can help me out here, rather curious problem with my mobile phone. Samsung Galaxy A51

Phone was working fine this morning at home, I plug it in (whilst on) to charge it up (it was on around 40%) and after a while I returned to phone and attempted to use it. The phone was turned off so I pressed power button to boot it up again.

The loading screen popped up with samsung and make of the phone, appears to be starting and then the screen just goes black. The screen works fine when loading, works fine when I plug it in to charge it again and shows the battery %.

The phone has not been dropped or banged/damaged in any way, I've tried a hard restart which does work but as above just shows the phone booting up then screen goes black.

It's like the phone is just shutting down after trying to boot, I've tried it unplugged and plugged in.

Anyone got any ideas what the issue could be ?

I've tried booting into safe mode (unsuccessfully) but nothing works

[AaronAJ]

@MaxF3 Sounds strange! Please perform a Soft reset of your phone by pressing and holding the Power and Volume Down buttons together for around 10 seconds.

Put your device on charge for 15 minutes. If you haven't used your device for more than a week, put it on charge for at least 30 minutes. 

If this doesn't help, please clear the cache partition on your device by doing the following:

1. Turn your device off, if it isn't off already.
2. Once the device is off, hold the volume up and the power buttons at the same time for 10 seconds. Keep holding the buttons until you see a Samsung logo.
3. Using the volume down button, scroll down to Wipe cache partition.
4. Press the powerbutton to select.

Hope this helps!

[MaxF3]

Soft reset has been done multiple times, the screen just goes black.

The phone is already fully charged 100%

Phone gets used everyday

cannot clear partition as the screen is black (as I described above)  holding down the power button & volume up does nothing.

[Zero-one]

Put The phone în download mode and with Odin resoft The phone

[MaxF3]

I have no idea what that is sorry, Could you explain ?