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Singlle long beep on booting up my Biostar M7NCDPro motherboard with nothing on screen

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Answers :

If you get one continuous beep (Long and Non-Stop) \015\012
\015\012This could happen if:
\015\0121. The Power supply is damaged or bad.
\015\0122. The BIOS is corrupted. Try resetting the CMOS using JCMOS1 jumper on the motherboard or remove the battery from the motherboard for 20 minutes. At this point the first thing to try is a different Power Supply to see if the result is better. If the same problem happens with the new power supply, you may need to send the BIOS Chip to local dealer for reprogramming.
\015\012\015\012
\015\012If you get one long High Pitched tone that does not stop until you disconnect the power supply:
\015\012
\015\0121. Check if the CPU fan is connected to the JCFAN1 connector.
\015\0122. The CPU might be overheated. Change the CPU FAN or check if the CPU fan has proper contact with the CPU. Refer to your manual for CPU installation.
\015\0123. Clear CMOS battery (JCMOS1), be sure to set JCMOS1 back to 1-2 position. (See Quick start guide/ user manual for more info on how to clear the CMOS)
\015\0124. Make sure the power supply you have on your system supports the M/B specification. Example. If you have a P4 M/B, you need to use an ATX v2.03 specification power supply. (power supply that has an extra 4-pin square connector)
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