Micro Cooling Fan fault detection

If you hear "Micro Cooling Fan" "toot toot ..." continuous short beeps, indicating a slight short circuit inside the machine, immediately shut down, open the case, unplug each host interface cards and other devices within the power line, signal line is energized test machine, such as the removal of a device when the system is back to normal, it is just the removal of a moderate equipment damage or failure due to improper installation. As to retain only the power cord is connected motherboard power test machine, still hear "Micro Cooling Fan" "toot toot ..." continuous short beeps, there are three reasons for failure:
① motherboard and chassis short circuit, remove the board is powered up inspection;
② Power overload poor, for only the power to try;
③ board has shorted, Troubleshooting "Micro Cooling Fan" Please repair the motherboard. Warning: Please turn off the power plug devices, hot plug can damage the equipment.