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Introduction

This guide will show you how to remove, replace, or reinsert the RAM modules in your HP ProBook 640 G3. You may need to perform this replacement if your device is crashing quite often, corrupting files, freezing, rebooting unusually often, or having problems running multiple programs. Bad memory can be the root of these kinds of problems. The repair is rated as Easy and is estimated to take about 5 minutes.

A critical safety caution before beginning: ensure the device is completely powered down and not connected to any charging sources. If the laptop was recently used, also ensure it is not still hot before proceeding. The tools you will need include a Phillips #00 Screwdriver, Plastic prying tools, and an Opening Pick. Note that the steps for removing the battery are a prerequisite and it is helpful to separate your screws into groups to aid in reassembly.

What you need

Step 1 Lower Case

HP ProBook 640 G3 RAM Replacement, Lower Case: step 1, image 1 of 3

HP ProBook 640 G3 RAM Replacement, Lower Case: step 1, image 2 of 3

HP ProBook 640 G3 RAM Replacement, Lower Case: step 1, image 3 of 3

Before beginning, power the device down and disconnect all peripheries.
Remove the eight 6 mm-long Phillips screws securing the lower case.
Insert an opening pick into the seam between the lower case and chassis.
Slide the pick around the entire perimeter of the device until the lower case releases.
Remove the lower case.

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Step 2 Battery

HP ProBook 640 G3 RAM Replacement, Battery: step 2, image 1 of 3

HP ProBook 640 G3 RAM Replacement, Battery: step 2, image 2 of 3

HP ProBook 640 G3 RAM Replacement, Battery: step 2, image 3 of 3

Use a Phillips screwdriver to loosen the seven 6 mm-long captive screws securing the battery.
These screws are built into the edges of the battery, so they only need to be loosened in order for the battery to be taken out.

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Step 3

HP ProBook 640 G3 RAM Replacement: step 3, image 3 of 3

Remove the battery.
If the battery will not come out, you may need to loosen the screws more; refer back to step 2.

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Step 4 RAM

HP ProBook 640 G3 RAM Replacement, RAM: step 4, image 1 of 3

HP ProBook 640 G3 RAM Replacement, RAM: step 4, image 2 of 3

HP ProBook 640 G3 RAM Replacement, RAM: step 4, image 3 of 3

Two clips secure each RAM module in place, one on each side. Using your fingers, spread the clips away from the RAM module.
Gently remove the memory from its housing by pulling it out and up.
Retention arms are thin and fragile, be careful when unhooking them.

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Step 5

HP ProBook 640 G3 RAM Replacement: step 5, image 3 of 3

Repeat the previous step for the second memory card.
During reassembly, the memory card can be slid back into its slot and gently pushed down. The retention arms will then secure around the card on their own and don't need to be pried open.

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Conclusion

To reassemble your device, follow the above steps in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Try some basic troubleshooting or ask our Answers community for help.