How to Fix a Computer that Won't Boot Up (DELL Tech Support)

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.

2. Unplug All External Devices

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
• Docking station

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.

3. Check for Specific Error Messages

Dell has information on some specific error messages at startup. Refer to the following links for more information:

• Loading PBR for Descriptor generated after POST
• A BLUE SCREEN or STOP error has occurred

If the error message is not listed above, try searching for additional solutions on the Web.
Click on your preferred search engine below, then describe your problem in the search box provided.

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. For example, F9 on the Inspiron N5110.
4. Press ESC to exit the BIOS, and be sure to select Save and Exit to save your changes.

5. Boot to the Hard Drive Using the One-Time Boot Menu

Restart the computer, and at the Dell logo screen tap the <F12> key multiple times to invoke the One-Time Boot Menu. Select the Boot from Hard Drive option and press Enter.

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