I recently upgraded my setup by swapping out my GPU from a 4070 to a 5080 and replaced my fans with nine Lian Li Infinity fans. Installation went smoothly without any issues. However, when I tried to boot up my computer for the first time after these upgrades, the RGB lights flashed on briefly but then it went completely dead, like it was unplugged. My power supply is 850W. What do you think could be the problem?
4 Answers
Just a thought: make sure the CPU fan or AIO headers are plugged in completely. Certain motherboards won't boot unless something is connected to those ports.
First, I'd suggest checking all the cables to ensure they're securely connected. It's also a good idea to reseat your RAM. If the fans are running off a hub, try disconnecting the hub and see if that changes anything. Sometimes a loose connection can cause issues like this.
Make sure to double-check every power cable from your PSU to the motherboard and GPU. One might be loose. Additionally, check for any short circuit protection kicking in. This can happen if something metallic is touching the board, like a dropped screw behind it. No screws should be behind the motherboard.
Also, check if there's an I/O switch. Sometimes it's recommended to turn this off when swapping parts. If you forgot to turn it back on, that could be the culprit.
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