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by Epic (880 points)

1 Answer

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by Mythic (1.6k points)
To troubleshoot a motherboard that isn't powering on or posting, start by checking all power connections.

Ensure the 24-pin ATX power connector and the 4/8-pin CPU power connector are securely attached.

Verify that the power supply switch is on and the power cord is plugged into both the wall outlet and the power supply.

Next, test the power supply with a different, known-working unit to rule out a power supply failure. Inspect the motherboard for visible damage or burnt components and ensure the CPU, RAM, and any expansion cards are properly seated.

If the issue persists, try a minimal boot configuration by removing all non-essential components, leaving only the CPU, one stick of RAM, and the power supply connected.

Disconnect all peripherals, drives, and additional expansion cards. If the system still doesn't power on or post, the problem may lie with the motherboard, CPU, or RAM, requiring further testing or professional assistance.
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