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This guide will walk you through the process of replacing the cooling fan in the HP ProBook 640 G1 laptop. A faulty fan can lead to overheating, loud noises, or reduced system performance. Before beginning this repair, check our Troubleshooting page to see if your issue can be resolved without replacing the fan.

This repair requires removing the battery, service cover, and fan assembly. Always make sure the laptop is fully powered off and not in sleep mode. Disconnect the charger and any external devices before starting.

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crwdns2931653:01crwdne2931653:0 Battery

HP ProBook 640 Fan Replacement, Battery: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Turn the laptop upside down to show the battery lock slider.
It is a black slider near the top, with a battery logo to the left and a lock sign to the right.

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HP ProBook 640 Fan Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Slide the battery slider all the way to the left, towards the battery symbol.
You may also need to slide the other slider to the right of the battery slider, as shown in the picture.

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HP ProBook 640 Fan Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Remove the battery by sliding it away from the laptop while holding the battery locker.
The battery should slide out with ease.

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crwdns2931653:04crwdne2931653:0 Back Panel

HP ProBook 640 Fan Replacement, Back Panel: crwdns2935265:04crwdnd2935265:01crwdnd2935265:02crwdne2935265:0

HP ProBook 640 Fan Replacement, Back Panel: crwdns2935265:04crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

Slide down and pull up on the cover to remove it.

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crwdns2931653:05crwdne2931653:0 Midframe

HP ProBook 640 Fan Replacement, Midframe: crwdns2935265:05crwdnd2935265:01crwdnd2935265:03crwdne2935265:0

HP ProBook 640 Fan Replacement, Midframe: crwdns2935265:05crwdnd2935265:02crwdnd2935265:03crwdne2935265:0

HP ProBook 640 Fan Replacement, Midframe: crwdns2935265:05crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

Remove the eight rubber screw plugs from the bottom and the two rubber screw plugs from the sides of the laptop using a paperclip.
Remove the fourteen 6 mm screws from the bottom of the laptop and the two 6 mm screws from the sides using a T8 Torx screwdriver.
Remove the six 4 mm screws that secure the midframe using a T8 Torx screwdriver.
Some of the screws are held in place by springs and cannot be fully removed, but can still be loosened.

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HP ProBook 640 Fan Replacement: crwdns2935265:06crwdnd2935265:01crwdnd2935265:02crwdne2935265:0

HP ProBook 640 Fan Replacement: crwdns2935265:06crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

Remove the disk drive by gently pulling it out.
Remove the two 3 mm screws using a Phillips #1 screwdriver.
Only one screw is visible in the photo the second screw is located directly above it.

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HP ProBook 640 Fan Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:02crwdne2935265:0

HP ProBook 640 Fan Replacement: crwdns2935265:07crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

Gently pull up on the midframe, gripping it from the inside.
This may take a small amount of force. If it feels stuck, check for missed screws. Go back to the previous steps and make sure you have removed all necessary screws.

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