Backup your computer use clonezilla

• http://drbl.nchc.org.tw/clonezilla/
• How to backup
• Make a clonezilla live usb
• clonezilla faq 
• http://alternativeto.net/software/norton-ghost/?platform=windows&license=free 
• 7 Freeware Acronis True Image Alternatives & Norton Ghost Alternatives