Power button not working

[Smoothbird]

Hello, it would seem that my HP Compaq Elite 8300 personal computer no longer has a working power button, however, the motherboard is still receiving power.

I have tried plugging into a different wall source, pressing and holding the CMOS button for 20 seconds, and removing components to diagnose any problems to no avail.

Any more suggestions on what I could do?

[itsmyname]

There should be two wires from the "back" of your power-button that connect to two pins on the motherboard. Check that those two wires are still connected to the motherboard.

[Smoothbird]

No wires, just a single button on the motherboard.

[itsmyname]

Is this your computer:   https://support.hp.com/ca-en/document/c03345460

From this image: https://support.hp.com/doc-images/580/c03351758.jpg

it seems like the power-button is on the front panel, not on the motherboard.

[Smoothbird]

Yes the power button is on the front panel, but when that button is pushed it also pushes a button on the motherboard that is directly behind it.