If your HP Z4 G4 will not start, shows no picture, runs hot or has become slow, we can diagnose and repair it at our Bermondsey workshop. It is a workstation from 2017. Parts are matched to the exact chassis, so the model number matters when we quote.
- Model number
- Z4 G4
- Released
- 2017
- Type
- Workstation
- Storage
- SATA bays and M.2, by configuration
- Memory
- DIMM slots
HP Z4 G4 repairs and upgrades
Power supply repair
We test and replace failed power supplies. Many branded desktops use a manufacturer-specific unit, which we match to the exact chassis.
Graphics repair
We diagnose and replace failed graphics cards, and check that the power supply and case can take the card you want before an upgrade.
SSD and storage upgrade
The HP Z4 G4 has room for SATA drives and, on most boards, an M.2 SSD. The usual upgrade is an SSD for Windows and programs with the old drive kept for storage.
Price confirmed before work starts
Memory upgrade
The HP Z4 G4 uses standard desktop memory. We check the board’s limits and fit matched modules.
Overheating and fan repair
Overheating and noise are usually dust or a failing fan. We clean the system, replace what has failed and check temperatures under load.
Windows repair and reinstall
Windows 11 support depends on the processor: versions with an 8th-generation Intel Core or Ryzen 2000-series chip or newer qualify, and earlier ones do not. We check yours and advise.
We also carry out motherboard repair, virus removal on the HP Z4 G4, along with no-picture and no-boot diagnosis, port repair, Wi-Fi and Bluetooth card replacement and data transfer to a new PC.
Known issues with the Z workstation range
- Workstations often carry several drives, sometimes in RAID, and ECC memory. Tell us the configuration before any storage or memory work.
- Power supplies and motherboards are specific to the chassis on most workstation towers, so we match parts by exact model.
Data recovery from the HP Z4 G4
Desktop drives are removed and imaged on our own equipment. If the HP Z4 G4 has more than one drive, or a RAID array, bring the whole machine so we can see how it was set up.
Estimate the cost with our data recovery calculator, or read about recovering files after a ransomware attack.
Where the HP Z4 G4 sits in the range
Its nearest relatives in the HP Z workstation range are the older HP Z240 (2015) and the newer HP Z2 Tower G4 (2018).
Questions
Can the SSD or memory in the HP Z4 G4 be upgraded?
Drives can be added or replaced. Memory uses standard slots and can be increased.
My HP Z4 G4 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.
How do I get my HP Z4 G4 to you?
Bring it to our workshop at Unit 1 The Willows, 80 Willow Walk, London SE1 5SY, or call 020 7237 6805 to ask about courier collection. We confirm the price before any work starts.
Can you upgrade the graphics card in a HP Z4 G4?
In most cases, yes. We first check the power supply, the physical space and any manufacturer-specific connectors, then fit and test the card.