My zl is dead.not bootloop no led indicators

My ZL is suddenly dead..not bootloop.
I try Pc companion but it can't detect my phone even when i press vol down when I plug it via usb
same story happen when i try to fix it with flashtool when i try to flash it firmware but still pc can't detect my phone
I use original cable data for samsung s5 since my sony ZL's was broken. Need help please!!!!!