How do I restart in normal mode?

I have a desk top using microsoft/windows and did not have any problems with open office until recently so I uninstalled that feature and installed libreOffice and it worked perfectly until now when it flashed an error message whenever I try to print anything. What can I do?

Which OS and LO version do you use? What is the error message? Is it coming from the printer? Can you print in other applications? Please, give us more information to help you.