Toshiba 6.1

Hello,
I had problems starting my Toshiba and I did the Hold down pwr button and the F6 I got it going restored it back to the out of box state.Thank you very much for that it helped me alot.Now it is telling me it cannot start becsuse I either need to remove a virus disk defragment or back up utilities.Please tell me how to do these! If it wont start how do I get these done? I love this site the info iis just amazing.Thank you.