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Computer will not boot to Windows 10



This article describes general troubleshooting of computers that are powering up correctly and passing the Dell BIOS screen at boot-up, but do not successfully boot to Microsoft Windows 10.


Table of Contents:

  1. Verify the Computer Finishes Initial Power-Up (POST)
  2. Unplug all external devices and perform a hard reset
  3. Check for Specific Error Messages
  4. Reset the BIOS to Default Values
  5. Run a Computer Diagnostic
  6. Reset your Windows 10 Operating System
  7. Safe Mode Troubleshooting
  8. Virus and Malware Troubleshooting
  9. Restore the Operating System to Factory Settings

This article is for Microsoft Windows 10.
Click below to change the operating system.


Video guide: My computer won't boot to Windows 10



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Step 1: Verify the computer finishes initial power-up (POST)

In many cases a computer will not attempt to hand off control to the operating system. If you power the computer on and you see a Dell logo screen with a bar at the bottom, and that bar fills up completely and disappears, then your computer has successfully completed POST.

Click Here if Your Computer Does Not Complete POST

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Step 2: Unplug all external devices and perform a hard reset

A piece of hardware may be interfering with the normal boot process of Windows. Try unplugging all devices from your computer, including:

  • Printers
  • Scanners
  • Media Card Readers
  • Small Media cradles (iPod, PDA, MP3 player, etc.)
  • Digital Cameras and Video Recorders
  • USB storage devices
  • CDs or DVDs from all optical drives

The only devices you should leave attached to your computer are your monitor, mouse and keyboard, if the computer is a desktop.

Once this is completed, unplug the computer from the wall, remove the laptop battery (if applicable) and hold the power button down for approximately 15 seconds. Then plug wall power back into the computer and attempt to restart.


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Step 3: Check for specific error messages

Try searching for additional solutions on the Web.
Click on your preferred search engine below, then describe your problem, including any specific error messages.

Search Dell Search Microsoft Search Google Search Bing External Link

If you are experiencing a blue screen error on your computer, refer to Windows 10 crashes to a blue screen for common blue screen errors and how to troubleshoot them.

If you are experiencing a black screen that will not go into Windows, refer to Microsoft article Troubleshoot black screen or blank screen errors.


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Step 4: Reset the BIOS to default values

If your computer is set to first attempt to boot to another device, this may cause issues with successfully booting to Windows. To reset your computer's BIOS to factory defaults, perform the following steps:

  1. Restart the computer
  2. At the Dell logo during restart, tap the F2 key repeatedly until you see Entering Setup in the top right corner of the screen.
  3. Depending on the BIOS, you may need to press a key listed at the bottom of the screen to load default settings.
  4. Press ESC to exit the BIOS, and be sure to select Save and Exit to save your changes.
    Note: For Windows based tablets, perform the following steps instead.
    1. With the tablet completely off, press the Power Button, and then immediately press and hold down the Volume Down until the System Setup page (BIOS) appears (if the tablet boots to Windows, try again).
    2. Touch or click Load Defaults.
    3. Touch or click OK.
    4. Touch or click Exit, if the tablet does not automatically reboot.
Note: If resetting the BIOS to factory defaults does not resolve the issue, you may also try to update the BIOS to the latest version to resolve issues related to the BIOS of your PC or tablet. Refer to the Dell knowledge-base article What is BIOS and How to Download and Install the latest BIOS? for more information on BIOS update or downgrade procedure.
Note: System BIOS may get corrupted if the BIOS upgrade or downgrade procedure is not completed successfully or interrupted.
A corrupt BIOS is one of the possible causes of your PC unable to complete POST or some times even boot into the operating system.
If your Dell PC or tablet supports BIOS recovery, you can recover the corrupt BIOS by using the BIOS recovery method applicable for your Dell PC or tablet. Refer to the Dell knowledge-base article BIOS Recovery options on a Dell PC or Tablet for more information.

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Step 5: Run a Computer Diagnostic

To determine the Dell hardware diagnostic tool that is right for your situation, refer to What Dell diagnostic tools can I use to diagnose and fix hardware problems?.

Note: For Dell Latitude laptop PCs, you may try to recover the PC using the forced ePSA method. For more information, refer to the Dell knowledge-base article How to Use Forced ePSA to Recover from POST or Boot Failure.

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Step 6: Reset your Windows 10 operating system

If your system files have been damaged, a reset of Windows 10 reinstalls these files without damaging your data. After the third attempt to boot has failed, Windows 10 will automatically boot into the Windows Recovery Environment (WinRE). Follow these steps to reset Windows 10:
  1. At the Choose an option screen, select Troubleshoot.
  2. At the Troubleshoot screen, select Reset this PC.
  3. At the Reset this PC screen, select Keep my files.
  4. Select your user account and enter the password if prompted.
  5. Select Reset.
  6. Windows will perform the reset process
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Step 7: Safe Mode Troubleshooting

Software may be causing your system to not boot properly. For more information on booting to Safe Mode, and to troubleshoot using clean boot troubleshooting, refer to the following links:

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Step 8: Virus and malware troubleshooting

Your computer may be affected by a virus or other malicious software. Dell recommends strengthening your PC against malicious attacks by keeping your antivirus software up-to-date.
View our Virus and Spyware Removal Guide

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Step 9: Restore the operating system to factory settings

If the previous troubleshooting could not resolve your issue, it may be necessary to restore your computer to factory settings. To restore your computer's operating system and software to the original factory settings, refer to Dell Knowledge Base article, "Reset or reinstall Windows 10 on a Dell computer"

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ID de l'article : SLN297926

Date de la dernière modification : 09/25/2017 04:20 PM


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