Laptop won’t turn on? First, watch what happens when you press the power button — each behavior points to a different cause.
| What happens | Most likely cause | Go to |
|---|---|---|
| Nothing: no lights, no noise | Power (battery, charger) | Steps 1 and 2 |
| Lights and fan come on, but the screen stays black | Display, brightness or graphics | Step 3 |
| Turns on and immediately shuts off | Overheating, memory or motherboard | Step 4 |
| The logo appears but Windows won’t load | A Windows problem | See Windows 11 won’t boot |
In this article
Step 1: charger and battery
- Plug the charger into an outlet that works and check the charger’s light and the laptop’s charging light.
- If the battery is completely drained, leave it charging for 30 minutes before trying to turn it on.
- Test with another compatible charger if you have one. Also see laptop plugged in, not charging.
Step 2: power reset
This drains residual electricity and fixes many “no sign of life” cases:
- Unplug the charger and all devices (USB drives, mouse, external drives).
- Hold the power button for 30 to 60 seconds.
- Reconnect only the charger and turn it on.
Step 3: it turns on, but the screen is black
- Turn up the brightness with the function keys — it may be at minimum.
- Press Windows + Ctrl + Shift + B to restart the graphics driver.
- Connect a monitor or TV over HDMI and press Windows + P › Duplicate. If the picture shows on the external monitor, the laptop works and the problem is the screen or its internal cable.
- If neither the external monitor shows a picture nor the BIOS appears, it’s hardware (memory or motherboard).
Step 4: it turns on and off by itself
- If the laptop was very hot, let it cool and see laptop overheating and shutting down.
- Beeps or lights blinking in a sequence are the manufacturer’s error codes — note the sequence and check the manual or manufacturer support.
FAQ
Did I lose my files?
In most cases, no: the drive is usually intact even when the motherboard fails. A repair shop can recover the data — and it’s a good reminder about the 3-2-1 backup rule.
The keyboard lights up, but the screen doesn’t.
That’s step 3: test an external monitor to find out whether it’s the screen.
Is it worth repairing?
It depends on the fault and the laptop’s age. Replacing a screen, battery or charger is usually worth it; a motherboard on an old laptop, not always — ask for a quote first.
