motherboard red light

I bought a new hard drive and cables for it . Once I plugged in the the new hard drive into my pc with the data and power cables I bought, my pc did not want to power on when ever I press the start button the motherboard flashes a red cpu light

One morning, I used my PC normally for like an hour or two, and then I shut it down for around 10 hours. And on the same day, I pressed the power button. The fans were spinning, RGBs were turning on, but no display output and the red light of death showed up on my motherboard. I looked up what a...