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The computer is plugged in, but it fails to start and the host does not respond. Why?

There may be the following reasons:

  1. In the current environment, the circuit has not been laid and there is no electricity;
  2. The power strip switch connected to the computer power cord is not turned on or the strip is damaged;
  3. The control switch of the computer power supply (some power supplies have a switch) is not turned on;
  4. The power switch of the host is not pressed;
  5. The mainframe switch is damaged or the switch wire is not plugged into the correct position of the motherboard;
  6. The mainboard battery voltage is too low;
  7. The Clear CMOS jumper on the motherboard jumped to the discharge position;
  8. The CPU is damaged;
  9. The motherboard is damaged;
  10. The computer power supply is damaged;
  11. The power cord is damaged;
  12. The auxiliary power supply plug on the motherboard is not plugged in;
  13. The power plug is not inserted into the power interface of the motherboard.