System not booting

I finished a new PC but it won't turn on. There are no lights on the motherboard when I plug in the PC, and hitting the power button does nothing. I've already tried replacing every component inside (bought replacement MB and CPU, swapped out the RAM and PSU from my old PC, tried turning on the...

Hi, I got a new Samsung 28" 4k Monitor, the cheapest one out there with 10bit color depth. not for gaming but for media production or other hobbies. I play all my games in FHD or 1440p. BUT, if I use 4K in games, or do an alt tab while in game or anything that uses 3D, it starts turning off and...