The best place to start would be a full history of the problem -- you give no indication whether this is a new build or an existing one with a new problem -- and a complete list of specs, including exact model of power supply.
One year has completed to the
Build, i am facing this problem from about 1 month.
My pc specs
Intel i7 9th gen
16 gb ram
2tb hdd, 250gb SSD
Cooler master mwe gold 650
Asus motherboard