Contacted HP. They said after inspected the CPU info etc that I am current no upgrade needed however HP Tech said:
The i7-2600 processor is the best one HP offered in the 8200 Elite model series. There are none better you can install.
The onboard Intel HD 2000 graphics isn't really suitable to run Adobe Photoshop because the drivers are out of date.
Install a nVidia GT 710 low profile graphics adapter. Nvidia still supports that GPU with the latest W10 drivers and it only draws 19W of power, so it will work with the 240W power supply your PC comes with.
I did as advised and the computer is working fine. Thought to post as this is useful information.
Thanks!