pawelk1986 wrote:
But i don't mean programming, after all, to install and configure Windows to someone i don't I think do not need to know how to program
You're right, you don't need to program to install and configure Windows, but PCs already come with Windows installed, and the set-up process for a new computer is quite easy. Your only potential customers will be people who
A. Have messed up their computers so bad they need to re-install, or want to update
B. Cannot/will do this themselves, or learn from friends, etc.
C. Do not have or don't want to use official technical support or go to a computer shop.
There will be some people, but I don't think you can make much money unless you live somewhere where computers are very new to the population, like a third world country or a town with a lot of elderly people.