Unsuccessful Reinstallation

Waaaaaa!!! I thought it would be as easy as copying files but each day I'm encountering new problems with the reformat. I kept getting a Fatal Error message and I can't proceed with formatting my PC. I no longer have a clue what I should do with it. We already removed the videocard that we installed. I also tried resetting the processor and checked the memory but I guess the problem has something to do with the CD that I'm using. At this point, I need all the luck I can get...