/ SCANNOW - You use this command for the SFC tool to check for lost or lost system files of your computer.
/ SCANONCE - You use this command so that the SFC tool checks whether the file system files have been changed or lost the next time they start.
/ SCANBOOT - You use this command to make the SFC tool check for missing or incorrect system files when it starts.
To launch SFC, click Start -> Run and enter: sfc / scannow to run it immediately and check if the file has been deleted or changed.
5) Use Microsoft backup utility
Windows XP includes a backup utility, which allows you to back up and restore your hard drives. Using this utility you can back up and restore personal data that you specify when creating backups. Back up data regularly will avoid data loss issues in the event of an error. The Microsoft Backup utility can be found in System Tools under Accessories in the Programs menu.
6) System Restore
System Restore is a feature of Windows XP that allows you to restore your entire computer to a previous working state when a problem occurs. This is done without losing any personal files or personal data, such as text documents, spreadsheets, music, images, etc. This feature is enabled by default and Run in the background to create backups after certain events occur on your computer. System restore functions are only available to computer administrators, so if you are not an administrator access user, you cannot follow this instruction.
System Restore protects your computer by creating backups for critical files and system configurations. These backups are known as restore points. Restore points created before certain events take place to give you resources in case something goes wrong during the event.
If you want to learn more about this feature, read the English version of the tutorial here.
7) Windows File Protection
Windows File Protection protects the files needed for the operation of the computer and Windows to avoid being overwritten, deleted or changed. WFP will create a backup of those files into a folder named% SYSTEMROOT% system32dllcache. When WFP announces one of these files is being altered in some way, it will restore the file with a copy located in the dllcache directory .
Conclude
Windows XP actually has a number of features that allow you to back up settings on your computer in case of catastrophic errors as well as prevent files from being altered by malicious programs. Understanding how to use these programs is the best way to protect the safety of your work environment.