How to fix if the file xp system is missing

Hello everyone, is there a file loss in the system use, causing some functions of the system can not be used, or the system file is damaged due to the virus, there are problems such as boot prompt explorer program, and can not enter the desktop, at this time How to quickly repair the system,

Generally use file repair, the best use of the current winpe tool disk repair, copy the missing files to the system, if it is a registry problem, you can use winpe to modify, thus It is not necessary to reinstall the system to achieve the purpose of repairing the system. It is recommended that you always keep the winpe tool disk to facilitate the maintenance of the system