S4 Mini won't do anything

[JT1600]

Hello,

I have a problem.

My S4 Mini form Samsung won't boot or charge. Yesterday evening I left my phone on the charger and this morning it was turned off.

After some searching on Google, I found the idea to connect it to an pc.

The only thing that showed up in "Device Manager" was QHSUSB_DLOAD .

What can I do?
Ps: I hope I do it the right way posting it here )