01Check Power Connection

  • Make sure that your Mac is properly connected to a power source. A weak or faulty power connection can cause the screen to appear white.
  • Check the power adapter and ensure that it is securely plugged into both the Mac and the power outlet.
  • If you are using a MacBook, try resetting the System Management Controller (SMC). This can help resolve power-related issues.
  • To reset the SMC, shut down the Mac, then press and hold the Shift + Control + Option keys along with the Power button for 10 seconds. Release the keys and turn on the Mac.

02Disconnect External Peripherals

  • Disconnect any external peripherals or devices connected to your Mac, such as printers, USB drives, or external displays.
  • Sometimes, conflicts between external devices and your Mac can lead to a white screen. By disconnecting these peripherals, you can determine if any of them are causing the issue.

03Boot in Safe Mode

  • Starting your Mac in Safe Mode can help identify and resolve issues that might be causing the white screen.
  • To boot in Safe Mode, shut down your Mac, then press and hold the Shift key while pressing the Power button to turn it on.
  • Once your Mac is in Safe Mode, check if the white screen issue persists. If it doesn't, it could indicate that a software or third-party extension is causing the problem.

04Reset NVRAM/PRAM

  • Resetting the NVRAM (Non-Volatile Random Access Memory) or PRAM (Parameter Random Access Memory) can help resolve certain issues, including a white screen.
  • To reset the NVRAM/PRAM, shut down your Mac, then press and hold the Command + Option + P + R keys while pressing the Power button to turn it on.
  • Continue holding the keys until you hear the startup sound for the second time or see the Apple logo appear and disappear.
  • Once the NVRAM/PRAM is reset, check if the white screen problem has been resolved.

05Reinstall macOS

  • If none of the previous steps have resolved the white screen issue, you may need to reinstall macOS.
  • Before reinstalling macOS, ensure that you have a backup of your important files and data.
  • To reinstall macOS, restart your Mac and hold down the Command + R keys while it is restarting.
  • Release the keys when you see the Apple logo or a spinning globe.
  • Follow the on-screen instructions to reinstall macOS.
  • Note that reinstalling macOS will erase the contents of your Mac's hard drive, so it is important to have a backup.

Conclusion

Fixing a white screen on a Mac can be achieved by following these troubleshooting steps. Start by checking the power connection and ensuring that all external peripherals are disconnected. If the problem persists, try booting in Safe Mode or resetting the NVRAM/PRAM. If none of these solutions work, reinstalling macOS may be necessary. Remember to backup your important files before proceeding with any troubleshooting steps.

MethodsDetails
Check Power ConnectionEnsure proper power connection and consider resetting the SMC.
Disconnect External PeripheralsRemove any connected peripherals to rule out conflicts.
Boot in Safe ModeStart your Mac in Safe Mode to identify software issues.
Reset NVRAM/PRAMReset the NVRAM/PRAM to resolve certain issues.
Reinstall macOSIf all else fails, reinstall macOS after backing up your data.
mac
troubleshooting
white screen