Please post your specific pc components for example my hardware is MSI X670-Pro ,7800X3D , 32 Gb DDR5 6000 , XFX7900XTX , Coolmaster 1050 watt PSU ,WD SN850X 2TB nvme , Pixio PX275CP monitor. The more information you provide the more likely it is that someone can help you because my PC is very vague and doesn't give us any idea what the problem could be. From what you did specify I do not think a 500 watt psu is gonna be enough to power your system as the GPU can utilize over 250 watts by itself under heavy loading.