Dell Inspiron 5000 series laptop may not power on, complete POST or boot into the operating system

Your Dell Inspiron 5000 series laptop personal computer may experience issues like personal computer unable to power on, personal computer is unable to complete the POST process(Power On Self-Test) or may not be able to boot into the operating system. The personal computer may experience this issue after the system BIOS was updated recently with BIOS version A12.

Affected Dell Inspiron 5000 series laptop Personal Computers include:

• Dell Inspiron 5547
• Dell Inspiron 5555
• Dell Inspiron 5755

Cause information is not available.

If you Dell Inspiron 5000 series laptop personal computer is unable to boot into the operating system, use the following method to resolve the issue. If the issue is not resolved, follow the standard troubleshooting for boot issues.

1. Restart your personal computer.
2. When the Dell logo appears, tap F2 key until the message Entering Setup appears.
3. Click Boot Sequence in the left panel of the BIOS screen.
4. In the right panel, select UEFI.
5. In the left panel, click the + symbol next to Secure Boot.
6. Under Secure Boot, select Secure Boot Enable.
7. In the right panel, select Enabled.
8. Click Apply.
9. Click Exit to reboot the personal computer.

If your Dell Inspiron 5000 series laptop personal computer is still unable to boot into the operating system, select the operating system below for standard troubleshooting guides to resolve boot issues.

• Windows 10

For additional help with your Dell personal computer, Contact Technical Support.

Unable to power on or complete POST (Power On Self-Test)

If your Dell Inspiron 5000 series laptop personal computer is unable to power on or if the personal computer is unable to complete the POST process (Power On Self-Test), use the BIOS Recovery options on your personal computer.

Before you begin BIOS Recovery, ensure that the laptop's battery is charged up to at least 10% and disconnect all external peripherals connected to your personal computer like USB flash drives, USB external hard disk drives, or printers and so on.

1. Verify that the laptop is powered off and disconnect the AC adapter.
2. Press and hold the CTRL + ESC key on the keyboard.
3. Plug in the AC adapter to the laptop.
4. Release the CTRL key and ESC key on the keyboard once you see the BIOS Recovery screen.
5. One the BIOS Recovery screen, select Reset NVRAM (if available) and press Enter key.
6. Select Disabled and press Enter key if you want to save the current BIOS settings.
7. Select Recover BIOS and press Enter key to start the recovery process.

For more information, see these Dell Knowledge Base articles:

• BIOS recovery options on a Dell personal computer or tablet
• BIOS Update Helps Prevent No Power and No POST Failure Modes

If the issue is still not resolved, see the Dell knowledge base article that is applicable to the issue.

• How to Troubleshoot Power Issue on a Dell Laptop 
• How to Troubleshoot Power Issue on a Dell Desktop or All-in-One 

For additional help with your Dell personal computer, Contact Technical Support.