| Beep Sequence | Description | Troubleshooting |
|---|---|---|
| 1 short constant beep | Error with RAM refresh | 1. Check RAM for physical damage. 2. Try another stick of RAM. 3. BIOS update |
| 2 short beeps | RAM parity error | 1. If adding new memory, try removing to see if this fixes issue. 2. Check for conflicts in memory types. 3. Check power supply for unstable voltages. |
| 3 short beeps | RAM read/write test failed | 1. Repair corrupted files. 2. Perform memory tests |
| 4 short beeps | System clock error | Try synchronizing system time with an internet (NTP) time source. |
| 5 short beeps | CPU error | Check that CPU is properly seated. |
| 6 short beeps | Keyboard not detected/ keyboard controller error | Check keyboard is properly connected or try a different keyboard. |
| 7 short beeps | General CPU or RAM error | 1. Check that CPU is properly seated and connected. 2. Check that RAM is properly seated and connected. 3.Inspect connections for dirt or corrosion. |
| 8 short beeps | Graphics controller error | Check for proper connections to any graphics cards installed and that enough power is provided to the card. |
| 9 short beeps | ROM error | Check if system is attempting to boot from an external device. |
| 10 short beeps | ROM read/write error | 1. Run a memory diagnostic, such as mdsched.exe in Windows. 2. Clear CMOS |
| 11 short beeps | CPU cache check failure | 1. Check CPU temperature. 2. Inspect CPU fan for proper function. 3. Clear dust or dirt from CPU fan. 4. Check for faulty CPU heatsink. |
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