error messages window freezes and @ times no open at all. Tower on .but no monitor reaction...." monitor going to sleep " or no open.1 person needs an answerI do too

Hardware failures. You can do the troubleshooting yourself or take the machine to a reputable local professional. Don't use a BigComputerStore/GeekSquad type of place. http://www.elephantboycomputers.com/page2.html#Hardware_TshootMS-MVP - Elephant Boy Computers - Don't Panic!