I use a pcb layout cad program.
Typically the have built in macros ie cntl-alt-d = set sisplay colors.
This probably happened when I installed a program the may use the same
macro for their application.
I had this issue a number of years ago, and posted this problem.
It was an easy solution by editing the registry, bu deleting some entry.
I just can't remember the process.
Does anyone know hot to resolve this?