Windows: Computer Won't Turn On or Boot
Windows
won't boot
won't start
black screen
power
startup failure
By Kerry · Updated 03/04/26 10:34 PM
If your Windows PC won't turn on, shows a black screen, or fails to boot, here's what to check before calling us.
Step 1: Check power
- Make sure the power cable is firmly plugged into both the computer and the wall outlet
- Try a different outlet
- For laptops, try removing the battery (if removable) and running on AC power only
- Check that the power strip or surge protector is switched on
Step 2: Listen and look for signs of life
When you press the power button:
- Do you hear the fan spin?
- Do any lights come on?
- Do you see anything on the screen, even briefly?
If there's no response at all, the issue is likely power-related (power supply, battery, or outlet).
Step 3: Check the monitor (for desktops)
The computer may be running but the monitor may be the problem.
- Make sure the monitor is plugged in and turned on
- Check the cable connecting the monitor to the PC (HDMI, DisplayPort, VGA)
- Try a different cable or different monitor if available
Step 4: Try a forced shutdown and restart
Hold the power button for 10 seconds until the machine powers off. Wait 30 seconds. Press power again.
Step 5: Check for Windows startup repair
If Windows starts to load but then fails, it may enter Automatic Repair mode. Follow the on-screen prompts — Windows may be able to fix itself.
Step 6: Boot into Safe Mode
If Windows partially loads:
1. Hold Shift and click Restart from the Start menu
2. Go to Troubleshoot > Advanced Options > Startup Settings > Restart
3. Press 4 to boot into Safe Mode
If Windows works in Safe Mode, a driver or software is causing the problem.
If none of these steps work, contact us immediately at (269) 261-0269. Do not attempt to force a repair yourself as data could be at risk.