HP EliteBook 725 Maintenance and Service Guide - Page 50
Memory modules, Step 2: Select a Download
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Memory modules NOTE: Primary and expansion memory is installed in a side-by-side configuration in the bottom of the computer. If only one memory module is installed, it must be installed in the socket labeled 1. Description 8-GB (PC4-1866, 2400-MHz, DDR4, 1.2-V) 4-GB (PC4-1866, 2400-MHz, DDR4, 1.2-V) Spare part number 862398-850 862397-855 Update BIOS before adding memory modules Before adding new memory, make sure you update the computer to the latest BIOS. CAUTION: Failure to update the computer to the latest BIOS prior to installing new memory may result in various system problems. To update BIOS: 1. Navigate to www.hp.com. 2. Click Support & Drivers, and then click Drivers & Software. 3. In the Enter a product name/number box, type the computer model information, and then click Search. 4. Click the link for the computer model. 5. Select the operating system, and then click Next. 6. Under Step 2: Select a Download, click the BIOS link. 7. Click the link for the most recent BIOS. 8. Click the Download button, and then follow the on-screen instructions. Before removing the memory module, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unscrewing the power cord from the AC outlet, and then unscrewing the AC adapter from the computer. 4. Remove the bottom cover (see Bottom cover on page 33). 5. Remove the battery (see Battery on page 36). Remove the memory module: 1. Spread the retaining tabs (1) on each side of the memory module slot to release the memory module. (The edge of the module opposite the slot rises away from the computer.) 40 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts