Undo changers on my computer

[patkoo]

Hello,
how do i undo customize of my computer

 

[Hawkeye22]

Depending on what the changes are, you can perform a system restore to a date/time prior to when you made the changes.

 

[me 1]

What did you changed? font, start menu look, menu colours, icons, more details!
Or did you installed a desktop theme and changed everything?
Is that what you mean?