List your specs like so:
CPU: i5 2400
Motherboard: IS6XM REV 1.0
Ram: 8GB ram ddr3
SSD/HDD: 1tb green power
GPU: fxf rx 560D 2gb gddr5
PSU: 500w xtech psu
Chassis: thinkcentre m81
OS: windows 10
i have also went ahead and update the bios of the pc.
Since you've stated that you tried multiple power supplies, please state the make and model of each tested unit. On top of that, please state how old each unit is.