Question what to do

Nov 5, 2019
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Hello everybody!Recently i upgraded my computer a bit.Bought a 8gb of ram,a new gpu and a new psu.The specs are i7-4790,12gb ddr3,radeon rx570 and a 550w cpu.I used the psu wattage calculator and some other sites to consider the psu and so i ended with this one which was supposed to work just ok with the rig.Yesterday i experienced a crash,my screen going black and a repetitive sound coming out of the speakers needing to restart the pc to make it to work again.I've read some articles about this and it's because of a underpowered psu or something.My question is do i really need to change the psu or is it even a psu problem or something else and if it comes to changing the psu could i maybe do something so that my gpu doesn't ask for so much wattage?Thanks!