Computer suddenly shuts down before the start of the day

Users questions: Home computer this time do not know how, and some days ago with a computer today is not timing the next day can not be switched. It is the morning to open the computer, usually around 18 o'clock on the automatic shutdown, and re-open on No reaction was, how easily can not afford to have open. The next day all the normal boot again. I would like to place this How to solve Yeah, this is not the computer suddenly shut down harmful to you?
Experts answer: power box or the motherboard may have quality problems, it is best to repair
  • This information provided by the users.Thanks!