Automatically restart the computer can not boot

Users questions: XP system, boot to restart automatically when the scroll bar, can not enter safe mode, memory and so is loose, fan is working properly, which can be ruled out hardware problems, rework system OK, may be caused by the virus, consult What is this virus? Colleges to sit things I use USB after that, but another to use the U disk of the computer is fine, it is incomprehensible, please enlighten
Experts answer: masters are not necessarily viruses. kernel32.dll file is missing or damaged will also appear in the state.
  • This information provided by the users.Thanks!