Fault description: start the system prompt: Fastfat. Sys file is damaged or missing, the system cannot be started, please reinstall from the original installation disk or CD ROM to repair this file, or is between the "r" in the first screen to install, this is the old machine, have been using XP system, memory chips substitution can not start properly, and installed Windows 7 system can normal boot, but there are some software can't use, please master your advice, thanks!!!

CodePudding user response:

To copy or download from the Internet on other machines Fastfat. Sys file and then with the help of PE startup disk copy to the system directory, and then restart to see
Memory chips substitution is what mean?