Computer Won't Turn On? A Troubleshooting Checklist Before You Call for Repair

Before assuming the worst, a surprising number of "dead" computers are fixed by ruling out the obvious. Here's the order to check things in, roughly fastest-to-slowest.

1. Confirm it's actually a power problem

Check that the power cable is fully seated at both ends, try a different outlet (ideally on a different circuit), and if it's a laptop, remove the battery if possible and try running on power cable alone. A loose connection is the single most common cause of a "dead" machine.

2. Listen and watch for any sign of life

Fans spinning but no display? That points to a display or graphics issue, not power. Lights on the case but nothing else? That can indicate a motherboard or power supply fault. No response at all — no lights, no fans, no sound? That's consistent with a power supply or power delivery failure.

3. For desktops: check the power supply switch and surge protector

Desktop power supplies have a physical on/off switch on the back — it's an easy one to bump accidentally. Also check that the surge protector or power strip itself is switched on and its own reset button (if it has one) hasn't tripped.

4. For laptops: try a hard reset

Disconnect the charger, remove the battery if it's removable, hold the power button for 30 seconds, then reconnect and try again. This clears residual charge that occasionally causes a laptop to appear completely dead.

5. If there's any burning smell, stop

This is the one sign that means stop troubleshooting and call for repair immediately — a burning smell indicates a genuine electrical fault, and continuing to plug it in risks further damage or a safety hazard.

If none of the above brings it back, that's a good sign it's a hardware fault worth a proper diagnostic — at that point, further home troubleshooting risks masking the real issue rather than fixing it.