So im a newbie at building PCS (1st one) but when i turn my computer on it flashes(LEDS) and the fans within spin, aswell as it makes a beeping noise and immediately turns off, like its trying to turn on but fails every time. i have no idea what is wrong with it i did so much research and watched so much videos on what to do but i just can't decide and or make them work. Any help is appreciated<3