You can perform a simple "paperclip test" to determine if the PSU is the culprit. When your pc tower not turning on , the first reaction is often panic.
PC Tower Not Turning On Cable: PSU Troubleshooting with a Paperclip Test
Diagnosing the issue requires a systematic approach, treating the computer as a system of power distribution rather than a single mysterious device. Initial Verification: It's Not the Obvious Experienced technicians always verify the basics first because the most complex failure is often a loose plug.
By unplugging the PSU, inserting a paperclip into the 24-pin ATX connector, and connecting the specific pins, you can see if the fan spins. Locate the CLR_CMOS jumper on the motherboard, or remove the coin-cell battery for a few minutes, then reinsert it.
PC Tower Not Turning On Cable: PSU Paperclip Test Steps
A true "no power" state means absolutely nothing happens: no fans spin, no lights blink, and no fans hum. If the fan does not spin, or if it spins inconsistently, the PSU needs replacement.
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