Business PCs, Workstations and Point of Sale Systems

Hi,

I have an HP Z600, and want to upgrade to Windows 11 on it, below is the full specification:

Overview
Computer model: Hewlett-Packard HP Z600 Workstation
Operating system: Microsoft Windows 10 Pro (10.0, Build 19045)
Processor1: Intel(R) Xeon(R) CPU X5670 @ 2.93GHz 6/12
Processor2: Intel(R) Xeon(R) CPU X5670 @ 2.93GHz 6/12
Motherboard: Hewlett-Packard 0B54h
RAM: 48.0 GB
Hard disk1: KINGSTON SA400S37240G (223.6 GB/Fixed hard disk media)
Hard disk2: Hitachi HUA723020ALA641 (1.8 TB/Fixed hard disk media)
Graphics card: NVIDIA Quadro K2200 (4 GB)
Monitor1: Samsung S24D330 (1920x1080 / 24 Inch)
Monitor2: Samsung S24D330 (1920x1080 / 24 Inch)
Monitor3: Samsung SAMSUNG (1920x1080 / 31.5 Inch)
Sound card1: Microsoft High Definition Audio Device
Sound card2: (Generic USB Audio) USB Audio Device
Sound card3: (Generic USB Audio) USB Audio Device
Sound card4: NVIDIA High Definition Audio
Keyboard1: Standard PS/2 Keyboard
Keyboard2: HID Keyboard Device
Mice1: Razer DeathAdder V2
Mice2: PS/2 Compatible Mouse
Audio1: High Definition Audio Device
Audio2: USB 2.0 Camera
Audio3: TKGOU PnP USB Microphone
Audio4: NVIDIA High Definition Audio
Camera: USB Camera

How can I upgrade this computer to Windows 11??  It says the hardware is not compatible when I run the Microsoft checker.

Many Thanks,

Pete