The power turns on for a moment, but it doesn't boot from there. The case is an iiyama LEADJ, but the contents are a self-built desktop PC. I bought a used LEADJ because I wanted an environment where I could use Windows 11. I liked the case of the self-built PC I was using with Windows 10 until then, so I just swapped the contents. In other words, the case is LEADJ, and the contents are a self-built PC. It was working fine until I swapped them, but for some reason, it stopped booting after the swap. The CPU fan spins for a moment, but then it stops. The green pilot lamp on the motherboard is lit, so I think the motherboard is alive. - Case: iiyama LEADJ - CPU: i5-4590 ※ This is only what is written on the sticker I had stored, so it might be different. - Power supply unit: 700W - Memory: 32GB DDR3 1600 - Internal components: Motherboard, power supply unit There is no HDD or SSD storage. Because of this condition, I am selling it as junk. Are there any takers who can fix it themselves?