vtmB10 :
I don't know what model the power supply is, i only know that it's a 450 w psu..
Does it have a 6-pin PCIe connector for the RX 560 card? If not, the PSU is probably over-rated and not a 'real' 450W.
Btw, you can find out what PSU it is and what its specs are by looking at the label/nameplate on the side of the PSU