If your HP EliteBook 840 G3 has a broken screen, will not charge, runs hot or will not start, we can diagnose and repair it at our Bermondsey workshop. It is a 14-inch laptop from 2016. Both the drive and, on most configurations, the memory can be upgraded, which makes it a good candidate for a refresh.
- Model number
- 840 G3
- Released
- 2016
- Type
- Laptop
- Screen
- 14-inch
- Storage
- M.2 SSD, replaceable
- Memory
- SODIMM slots
Repairs we carry out on the HP EliteBook 840 G3
Screen replacement
We replace the 14-inch panel like-for-like, matching resolution and connector to the part number on the original.
Price confirmed before work starts
Charging port and power repair
The round charging socket wears and works loose. On most configurations it is a separate part on a short cable and is replaced without motherboard work.
SSD and storage upgrade
The HP EliteBook 840 G3 takes an M.2 SSD. We clone the existing drive to a larger one so Windows, programs and files carry over unchanged.
Price confirmed before work starts
Memory upgrade
Most configurations of the HP EliteBook 840 G3 have SODIMM memory slots, so memory can be increased. We check what is fitted and the maximum the board supports.
Windows repair and reinstall
This model does not meet Microsoft’s Windows 11 requirements, and Windows 10 reached end of support in October 2025. We can advise on the realistic options, including a lightweight Linux or ChromeOS Flex installation.
Battery replacement
We replace the internal battery and check the charging circuit and adapter at the same time. At this age, short runtime and sudden shutdowns usually point to a worn battery and not a board fault.
Price confirmed before work starts
We also carry out keyboard and trackpad repair, motherboard repair, liquid damage repair, overheating and fan repair, hinge and casing repair, virus removal on the HP EliteBook 840 G3, along with USB, HDMI and audio port repair, Wi-Fi and Bluetooth card replacement, webcam and speaker faults, BIOS password removal with proof of ownership and data transfer to a new machine.
Known issues with the EliteBook 800 range
- HP’s BIOS protection is strict. A forgotten BIOS administrator password usually needs board-level work, and we ask for proof of ownership.
- USB-C charging and docking faults are common board repairs on recent generations.
- EliteBooks are designed for servicing, with accessible batteries, SSDs and memory on most 800-series models.
Data recovery from the HP EliteBook 840 G3
The SSD in the HP EliteBook 840 G3 can be removed and imaged on our own equipment, so files can usually be recovered even when the machine will not start.
Estimate the cost with our data recovery calculator, or read about recovering files after a ransomware attack.
Where the HP EliteBook 840 G3 sits in the range
Its nearest relatives in the HP EliteBook 800 range are the older HP EliteBook 840 G2 (2015) and the newer HP EliteBook 840 G4 (2017).
Questions
Can the SSD or memory in the HP EliteBook 840 G3 be upgraded?
The SSD can be replaced with a larger M.2 drive. Memory is in slots on most configurations and can be increased.
My HP EliteBook 840 G3 will not turn on. Is my data lost?
Usually not. The drive is separate from the fault in most cases, and we can remove it and copy your files even if the machine itself is not worth repairing.
Is a 2016 HP EliteBook 840 G3 still worth repairing?
It depends on the fault. A battery, SSD or charging socket is usually worth doing. A major board repair on an older machine may cost more than the machine is worth, and if that is the case we will say so.
Where do I find the model number on my laptop?
The product name and product number are on the base label, or under the battery on older models. On many HP laptops Fn + Esc shows them on screen. For this model, look for 840 G3.