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No Beeps
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- No power to System, or
- If power present, then
possible motherboard failure
- (some systems will not
beep if the memory is dead)
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Single Beep
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Normal Operation
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Single Beep, but nothing on screen
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- Check screen light is
on, if not check power to screen.
- If screen OK, then
check memory fitted correctly.
- If screen & memory
OK, floppy drive power cable not on all 4 pins
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3 Long Beeps
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Video card out of slot, or on older machines this, or cable from screen
not attached correctly to 3 row female card connector at back of PC.
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Continuos Beep
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- If PC has been on for a
while, this is likely to be an over-heat alarm. Check CPU is
on/operable. If OK check BIOS Setup, if CPU Fan alarm is
enabled but there is no alarm on fan - change this to DISABLE. Note
leave CPU overheat alarm Enabled.
- Also check that Main
Power Unit fan is blowing if not, do not use PC until a New Power Unit
is fitted.
- If continuous signal
immediately on power up then check jumpers on motherboard, especially
CPU speed & multiplier jumpers.
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