How to Fix a Computer That Will Not Turn On

Simple troubleshooting steps to diagnose and fix a computer that won't start up.

  1. Check All Power Connections. Start with the basics by examining all power connections. Make sure the power cord is firmly plugged into both the computer and the wall outlet. If using a power strip, ensure it's turned on and working by testing it with another device like a lamp. For laptops, check that the charging cable is securely connected and look for any charging indicator lights. Try a different wall outlet to rule out electrical issues.
  2. Test the Power Button. Press and hold the power button for 10-15 seconds to ensure you're giving it a full press. Sometimes the button needs a firm, deliberate push rather than a quick tap. If you have a desktop computer, make sure you're pressing the power button on the computer tower, not just the monitor. Listen for any sounds like fans spinning or hard drives clicking when you press the power button.
  3. Check for Signs of Life. Look for any indicator lights, listen for fan noise, or feel for vibrations that suggest the computer is receiving power. If lights come on but nothing appears on screen, your monitor might be the issue rather than the computer itself. Check that your monitor is plugged in, turned on, and properly connected to the computer with the display cable.
  4. Try a Hard Reset. For laptops, remove the battery if possible and unplug the charger. Press and hold the power button for 30 seconds, then reconnect everything and try turning it on. For desktops, unplug the power cord, press the power button for 15 seconds, then plug it back in and try again. This clears any residual power that might be causing issues.
  5. Check the Battery and Charging. If you're using a laptop, the battery might be completely drained. Plug in the charger and wait 15-30 minutes before trying to turn it on again. Look for charging indicator lights and make sure the charging cable isn't damaged. Try wiggling the cable gently where it connects to see if the charging light flickers, which could indicate a loose connection.
  6. Inspect for Physical Damage. Look over the computer and cables for any visible damage like frayed wires, burn marks, or unusual smells. Check that all cables are in good condition and properly seated. If you notice any physical damage, stop troubleshooting and consult a professional repair service.