Some older posts for that laptop suggest that adding the "noapic" kernel boot parameter might make the NIC visible. (Stevo)
Tried that, after a lot of googling – (it’s just as well I don’t have a full time job this takes up a huge amount of time!) There’s good news & bad news.
Bad news is – made no difference to getting the LAN/Ethernet working on any of the 3 kernels I installed.
Good news is - it cured the switching off of the wifi LED when the keyboard function button is toggled.
It did this on all 3 kernels
For any other Linux novice, I found;-
https://access.redhat.com/solutions/58790
This told me to edit a file, which then told me to edit another file. But it worked in the end, it added “noapic” to all the installed Kernels. Also I now know where the 5 sec boot edit time is stored.
I found out where the logs are stored, had look at some but as I am not sure what I am looking for it did not help.
What do Linux users do to search logs for error msgs? Is tere a log manager? Pretty easy in Windows.