sampson 0 Junior Poster

After many many attempts I cannot get the calendar part of system restore to revert to a date 3-4 days ago. Can anyone please tell me how to do this. I have read all the instructions in many many site but cannot get computer to choose another date. Am I supposed to be in the safe mode or signed in as the administrator or not the administrator...please I am going crazy. I have done this before but noe cannot figure it out.....:?: