Two computers

Lets call these computers Downstairs and Upstairs. Downstairs is Windows XP and Upstairs is Kubuntu 16.04. It all starts when XP on Downstairs dies. I back it up and install Kubuntu 16.04, restore the data, and have to adjust the sizes of things because Kubuntu makes the most of the resolution available, and XP was reduced for the main user.  Reducing the resolution of Kubuntu gives an odd stretched display so I just expanded the sizes of the rows in the spreadsheets and increased the fonts.

This works fine for a week or two and then fails to start. The Motherboard has died. It was bought about 2005, so it has had a reasonable life. Got to keep this computer going, so bring Upstairs down and swap Hard Disks. So this computer is now U-D (Upstairs become Downstairs). The computer now known as D-U I put a motherboard I was given from Ben Campbell  into. This is an very fast Multi-core Mobo with 12 GB or RAM and it works very well. Only downside is that I lose my Windows 10 running  in VMware, but that could have been because of an upgrade to VMware.  Both computers are now working happily.

U-D is a bit noisy so I move it around a bit and then the monitor goes funny - into lower resolution or turning green. First thoughts are that it is the monitor cable so I swap that out, but it is not the solution. I then discover that the connector is loose on the Motherboard. Move the computers around again and swap hard disks, so D-U is now D-U-D and U-D comes back upstairs to be U-D-U. I put in a spare Video card and get that working so it is not using the video out on the motherboard.

All back working, but I have got my old computer back upstairs U-D-U and D-U-D is a super-duper 'gaming' computer that is only used for email and spreadsheets. In retrospect what I should have done is just put this video card in U-D  and left it downstairs.