F5F Stay Refreshed Hardware Desktop The motherboard isn't turning on properly.

The motherboard isn't turning on properly.

The motherboard isn't turning on properly.

L
LittleDiepp
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01-12-2026, 03:37 AM
#1
Hi everyone, I'm trying to figure out why my motherboard stays lit but won't power on. This build has been stable for years. After cleaning and reconfiguring the AIO, I reassembled everything and still can't get it to boot. I've done a lot of checks: verified CPU placement, re-seated RAM, tried with just one stick, swapped power cables (24-pin + 8-pin), reinstalled the graphics card, removed and reinserted the PSU, checked all connections, and even bypassed the power switch. I've also jumped the 24-pin connector on the PSU to confirm it works and the fan spins. Despite all these steps, nothing lights up except the motherboard LEDs. What might have gone wrong?
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L
LittleDiepp
01-12-2026, 03:37 AM #1

Hi everyone, I'm trying to figure out why my motherboard stays lit but won't power on. This build has been stable for years. After cleaning and reconfiguring the AIO, I reassembled everything and still can't get it to boot. I've done a lot of checks: verified CPU placement, re-seated RAM, tried with just one stick, swapped power cables (24-pin + 8-pin), reinstalled the graphics card, removed and reinserted the PSU, checked all connections, and even bypassed the power switch. I've also jumped the 24-pin connector on the PSU to confirm it works and the fan spins. Despite all these steps, nothing lights up except the motherboard LEDs. What might have gone wrong?

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Reply