Number of beeps
ACTION REQUIRED
1 beep:
Refresh failure:
Re-insert memory chips or SIMMs
2 beeps:
Loose or bad chip:
Loose or bad memory chip(s) in first 64K of RAM or mainboard is bad
3 beeps:
Loose or bad chip:
Loose or bad memory chip(s) in first 64K of RAM or mainboard is bad
4 beeps:
Timer failure:
Reseat loose memory chips and retest.
5 beeps:
Bad CPU chip, bad memory or bad mainboard:
Reseat loose memory chips and retest.
6 beeps:
Gate A20 Failure due to bad keyboard or bad mainboard:
Reseat loose keyboard controller chip, retest
7 beeps:
Bad CPU chip, bad memory or bad mainboard:
Reseat loose memory chips and retest.