HP Pavilion Wave - Wireless Mouse doesnt work

[ToddK80]

Hi,

i initially had some HP Pavilion Wave system (6Th gen Intel, 600-A0xx), it originally came with some wireless combo.
The usb-receiver was built in, and while myself put machine to grave (sadly), i kept the receiver + wireless mouse and keyboard since it was basically brand new.
Now, i am owning 3 other machines, mixed Win 10 and Windows 11, however i had issues with pairing the receiver with mouse and keyboard. By default it didnt worked well.

While the keyboard now works after i used some pairing trick with F2 + F3 + F4 button while turning it on, the mouse still does not want to work.
I tried several batteries and while i turn it on, the led indicator is turning on fora just 1 second before turning off again (keyboard does same in that regards but stays workinga).
However, the red flash led light on bottom for sensor isnt turning on, neither does mouse work on any system, tried several ports and checked function in Bios even.

There is no pairing/connect button and it seemingly has power, otherwise it wouldnt turn on.

Is there a special trick like as for the keyboard with key combinations?

On product page myself didnt found anything helpful
Mouse has PN: 859454-001
Receiver has PN: 859762-001

As the mouse is quite elegant, it would be sad to put it to e-waste.
Thanks for help

[ToddK80]

Any clues or tricks here known?
Thanks