Hello Danny,
"This is not the spirit that "Made the Empire Great" !"
In my defense, I have been enduring this problem for about a year!
I had to "twiddle" writing this post.
There is a limit to what one can tolerate, that limit is close to being breached!
What has kept me going is the fact I'm fond of my trusty machine despite its age, it's does all I need and to be honest I'm a bit leery of upgrading to a new device after reading of all the dramas people seem to have with Windows 10?
As andytug points out, complete dismantling of the machine is required to gain access to the rogue section of the motherboard. I have serious doubts the reassembly would be successful. Though I am considering attacking the machine from below with a Dremel. Nothing to lose..!
I shall keep you posted.
Cheers
Octane