"Norm X" wrote in message
...
Hi,

Snip
From my experience, I am inclined always to first suspect hardware fault.
So as is my usual technique, I cleaned the contact of the microSD and its
adapter first by rubbing with a pink pencil eraser and then with 70%
isopropyl alcohol on a Qtip and then a dry Qtip. Neither the pink eraser
nor the Qtip showed a grey stain as is common with oxidation. I also tried
to clean the Ethernet connector

After 40 years experience of computing, my order of priority for resolving
faults is:
1. The user (RTFM)
2. The software (ANY software)
3. The hardware.
Your tale of woe seems to be a classic example of the danger of tackling
faults the other way around.