24V DC Cooling Fan is like failure analysis and processing

"24V DC Cooling Fan" expert commitments up to everyone to resolve when the normal operation of the cooling fan and no display screen time and self-test failure is like black failure analysis and treatment methods and steps to share instructions. Boot host panel lights, normal rotation cooling fan inside the machine, can hear the sound of the hard disk platters rotate, "Da Dada ..." POST memory and PC speaker sound emitted by the alarm sound. See the top right corner of the keyboard master boot three lights flashing, but the display is blank.
"24V DC Cooling Fan" check processing methods: Symptom Description Host power supply is normal, most of the circuit board there is no fault, and can read and write properly before 64KB of memory, BIOS troubleshooting program starts running, and through PC speakers an alarm signal.
"24V DC Cooling Fan" This failure is mainly due to the monitor, graphics card, memory, motherboard and power supply caused by hardware problems. Such failures are mostly alarm sound through speakers probably determine fault location, due to the different versions of the BIOS different audio signal encoding methods, the paper MSI 5158 motherboard (AWARD BIOS) as an example, introduces its check processing methods