1 Long, then 3 Short Beeps: Video error
Explanation: The BIOS is unable to access the video system in order to write any error messages to the screen.
Diagnosis: This is usually caused by a problem with the video card, or the memory on the video card. It can also be a motherboard issue.
Recommendation:
Troubleshoot the video card.
If the video card is not at fault, troubleshoot the motherboard.
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OR
1 long three short could be Either the memory chips are not seated properly, or they are not compatible.
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OR
from the Award Bios beep code index......
1 Long Beep, 3 Short Beeps
One long beep followed by three short beeps means that either the video card isn't installed or the memory on the video card is bad. Reseating or replacing the video card will typically fix the cause of this Award beep code.
You do need to have a speaker installed if the board doesnt have one ..... your speakers or head set will not be active during post and boot .... relax....there really cheap!
Award BIOS beep code list......
http://www.computerhope.com/beep.htm Aussie Allan