REDO Backup

Wonder how to reload OS..You may actually hit the "Alt" + "F10" keys to enter the recovery mode (only for Acer OS licensed laptop) or execute the Acer E-recovery where you can find it in your licensed unit.

Those laptops which are not OS licensed may try some other well-known software Eg, Symantec Ghost, Here, i'd recommend REDO backup for disk cloaning ; It's totally free ; no need pay a cent. How it works? Burn the ISO file into CD or pendrive...then boot into CD or pendrive as below picture....Just run thru the menu screen and save the copy into external hardisc...that's it.

Just remember save a copy of your current OS by using this software before your OS get corrupted Download it now! 

http://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/  make it into pendrive....

Another windows based tool is called snapshot backup..it's also simple; ALl the jobs can be done inside windows. U may download it here

Links :
http://gigabitwarez.com/software/file_tools/54575-redo-backup-and-recovery-v094.html
http://gigabitwarez.com/software/14768-drive-snapshot-v14014776.html