Problem touchpad HP Pavilion DV2680EL

Apr 5, 2018
2
0
10
Hello.
I am reassembling this notebook.
I cannot remember if, when I bought it, the touchpad was working. In any case, now it does not work.
I tried dozens of times to no avail.
The flat cable pins of the two flat cables are OK, I checked them with a magnifying glass and cleaned them.
The touchpad has a blue led which, before Win 10 is fully loaded, becomes red.
I was thinking that maybe one or two of the little white sockets may be damaged, but it seems unusual to me.
I know these parts are very delicate but I would like to know your opinion.
Thanks a lot and best regards