Hello!Thank you for your question. I am Shefin and I look forward to helping you with your issue today.
If you would like not to keep the data in your computer, I would suggest you do a system recovery using recovery disc. It will restore the computer to factory settings.
If you do not have the disc, you can get it from Acer support (only if the computer is purchased within the last three years.)
S H E F I N