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This is a unified page explaining all the options on the options tab.
See the Command Line Use page for command line options.

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Create a Restore Point
It is highly recommended that you keep the "Create a Restore Point" checkbox checked.  Creating a restore point allows you to restore your computer to how it was before the program ran in case something breaks.  The restore point is saved under the name "Automatic System Cleaner v(version number)".  To run system restore, boot the computer into Safe Mode (restart and press F8 before the windows loading screen to reach the menu).  When logged on in safe mode click no to the message box that pops up.  Follow the on screen instructions.

Backup the Registry
Uses "NT Registry Backup" from h to make a backup of the registry in @WindowsDir&"\RegBackups\"&@YEAR&"-"&@MON&"-"&@MDAY&"-"&@HOUR&"\"

Reboot When Completed
This reboots the computer after everything is done running.
The following processes need a reboot to work properly
  • Schedule System File Defrag (runs during the next boot)
  • Schedule Checkdisk to run next boot (runs during the next boot)
  • Fix Windows Explorer (Windows 7 Only)
  • Reset Services to Default Values (Windows 7 Only)
Force File Update
When using the program on a computer that is not connected to the internet, you can uncheck the "Force File Update" check-box, and it will use previously downloaded files.  If they are old, or don't exist, you must run "Update Files" on a computer with an internet connection first.

Update Files
Updates all locally stored files to the latest versions.

Delete Files
Deletes all locally stored files.
They will be re-downloaded automatically next time the program runs.