Whether you built your PC or bought it as a prebuilt model you may have over time added components that may now make that power supply underpowered.
You may already have had an underpowered power supply to begin with.
It has aged. The components to were just basic.
Well there is no time like the present for an uprate or upgrade of that power supply.
Do it this June and get the labour to do the change FOC. (Limited to dropped off units to KANSHARE SDN BHD.