Maintenance and Service Guide for the HP EliteDesk 800 G4 SFF Business PC with parts catalog, disassembly steps, troubleshooting and diagnostics.
The guide provides detailed information on the HP EliteDesk 800 G4 SFF Business PC, including a full illustrated parts catalog, routine care instructions, and step‑by‑step removal and replacement procedures for components such as drives, memory, and the power supply.
It also covers system setup using the F10 utility, troubleshooting without diagnostics, POST error codes, password security, and how to use HP PC Hardware Diagnostics tools. Appendices contain battery replacement, power‑cord requirements, and specifications.
| Width | 3.94 in |
|---|---|
| Depth | 13.3 in |
| Height | 12.13 in |
| Weight | 19.82 lb |
| Maximum supported weight (desktop orientation) | 77 lb |
| Operating temperature range | 41° to 113°F |
| Power supply | 80 PLUS Platinum 250W active PFC |
| Operating voltage range | 90‑264 VAC |
Battery replacement instructions are provided in Appendix A, starting on page 122.
Reset the password jumper as described on page 114 in the password security section.
The system supports up to 77 lb (35 kg) in desktop orientation.
It uses an 80 PLUS Platinum 250 W active PFC power supply, 90‑92‑89 % efficient at 20‑50‑100 % load (115 V).