HP 14 Series Laptop Motherboard 854479-001 (NH4BU0J) — Intel Core i3-5005U Onboard, DDR3L

Revive an HP 14 series notebook with a factory-spec Core i3 motherboard.

The HP 854479-001 (NH4BU0J) is a replacement motherboard for HP 14 series laptops equipped with the Intel Core i3-5005U. The 5th Gen dual-core processor and Intel HD Graphics 5500 are integrated on the board, which supports DDR3L SO-DIMM memory. It is meant for repair technicians and owners restoring a failed notebook.

Why a Board Swap Restores the Whole Laptop

In HP 14 series notebooks with the Core i3-5005U, the processor is soldered to the motherboard. Power failures, chipset faults or liquid damage to the board stop the whole laptop, even when the screen, keyboard and battery are fine.

The 854479-001 board ships with the processor installed, so the repair is a direct swap. Moving the memory, drive, wireless card and cables to the new board brings the laptop back with its original performance.

Core i3-5005U Performance

The Intel Core i3-5005U is a 2.0GHz dual-core, four-thread 5th Gen (Broadwell) processor rated at 15W. It handles office applications, web browsing, video calls and media playback with low heat and good battery life.

OEM Fit and Connectivity

Mounting points, port cutouts and connector positions match the original HP chassis. The board supports DDR3L SO-DIMM memory (up to 8GB), a SATA 2.5-inch drive and the notebook’s wireless module.

Setup Instructions

How to Replace the HP 14 Series Motherboard

1. Power off, unplug the adapter and disconnect the battery, then remove the bottom cover while grounded.
2. Disconnect display, keyboard, touchpad and drive cables, and remove the memory, wireless card and old board.
3. Install the 854479-001 board, transfer the memory and wireless card, and reconnect each cable fully.
4. Reassemble and power on, check that memory and storage appear in the BIOS, and set the serial number if the BIOS prompts for it.