espressoguy

I truly apologize if this question has been answered. I ran the "wipe Free Space" option in ccleaner. I fell asleep and woke up in the morning to my computer shut off. When I turned it on I was horrified to find it started with the "check disk" feature in windows seven. After it went through the process my laptop was fine but now I am afraid to use the wipe freespace option for fear it will delete my hard drive. Please tell me how to use wipe freespace without harming my laptop.