Forgot to log in yesterday
I also need an ethernet connection away from the router so getting a cable from on e of the holes on the back of the router to the computer is not easy.
Try the homeplugs.
What internet speed do you have.
Mine is the upto 40Mb fibre to the cabnet and goes the full 40 and homeplugs work.
Can see you have broadband down the phone and using extension so upto the 20 or 25Mb I guess so these amazon £34 things will do. Makes an ethernet connection where you want.
Plug one upstairs and the other down stairs.
They need to go into a wall socket (nasty 4 way extension block is not ideal but i have done and seemed ok). Try to get into a wall socket so maybe by ethernet leads to suit the lengh between router and a homeplug (plugged into the wall), and downstairs homeplug and back of desktop computer.
They use mains wiring as a long piece of ethernet cable is best way of thinking of it.
£35 and come with 2 one metre leads, if they are long enough.
To be fair I have more expensive ones but just picked what came up on the list at the top.
Getting a cable from upstairs to downstairs ( long ethernet lead) is the best way but a lot of messing around and hole drilling and cable clipping. Then even then a job where it shows maybe.
I could have done but for quickness when for the value white homeplugs on the link. Job done, works for me.
These ones above have a button you set encription up with so no one nextdoor with some can get on your internet.
I tried from our flat to next door and it did work so signal travels through electricity meters, ( said in manula it does not!), so lies. I got the laptop on ethernet cable going from my router her to next door so set up encription. On the ones above just a button push.
For the money and it work for you. So 30 or 40 something pound, job done and money well spent