| Beep/blink state |
Sequence/pattern |
Meaning |
Troubleshooting steps |
| Single beep |
continual long beep |
Auxiliary power may not be connected to an external graphics card |
Check the documentation for any external graphics card installed for information on connecting an auxiliary power source. |
| 2 beeps |
beep, beep [pause], beep, beep
Then the BIOS can boot. |
No video detected |
- If using an add-in graphics card, reseat the card.
- Make sure a compatible processor is installed.
Related Topics:
No video and two beeps during boot
Processormatch.intel.com
|
| 3 beeps |
beep, beep, beep [pause]
This beep pattern repeats until the system is powered off. |
Memory error |
- Reseat the memory.
- Make sure that the contacts on the memory and the socket are clean.
- Try removing one bank of memory modules at a time. (Some systems can require a memory module in Bank 0.)
- Try using memory modules from the same manufacturer with the same part number and speed.
- Check for a faulty memory module by trying the memory in a known good system.
|
| High/Low beeps |
beep pattern:
high, low, high, low, high, low, high, low
Each high and low beep with the front panel LED blinks totals 16 blinks. |
CPU thermal trip |
- Check that the processor heatsink/fan is properly installed.
- Check that the thermal interface material is sufficient and is spread evenly.
|
