BIOS Beep Codes: AMI, Phoenix, Insyde
Updated
Many laptops beep with the codes of their BIOS maker. The laptop's own manual comes first; these tables help when the maker publishes nothing.
How it works
Count the blinks or beeps, then open the matching table below.
Not sure? The finder above takes the code and gives the meaning.
AMI BIOS (AMIBIOS) beeps
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Count the short beeps. Many ASUS, MSI, Gigabyte and white-label laptops use AMI firmware; newer AMI (Aptio) mostly beeps for missing memory only.
The BIOS maker's table. Laptop makers can change codes - the laptop's own manual comes first.
| Code | What it means | What to check |
|---|---|---|
1 | Memory refresh timer error | RAM / board. |
2 | Parity error in base memory | RAM. |
3 | Base memory read / write test error | RAM. |
4 | Motherboard timer not working | Board. |
5 | Processor failure | CPU / board. |
6 | Gate A20 / keyboard controller test error | Board (EC / keyboard controller). |
7 | Processor exception error | CPU / board. |
8 | Display memory error | Graphics. |
9 | BIOS ROM checksum error | BIOS chip: recovery or reflash. |
10 | CMOS shutdown register error | Board. |
11 | Cache memory test failed | CPU / board. |
Continuous | No memory module detected | Reseat / replace the RAM. |
Phoenix BIOS beeps (four-part codes)
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Groups of beeps separated by pauses, e.g. 1-2-2-3. Only fatal errors beep; one single beep at the end is a normal start. Used on many older Fujitsu, Sony, Toshiba and Dell laptops.
The BIOS maker's table. Laptop makers can change codes - the laptop's own manual comes first.
| Code | What it means | What to check |
|---|---|---|
1-2-2-3 | BIOS ROM checksum error | BIOS chip damaged: recovery or reflash. |
1-3-1-1 | Memory refresh test failed | RAM. |
1-3-1-3 | Keyboard controller test failed | EC / keyboard controller on the board. |
1-3-4-1 | RAM failure on an address line | RAM. |
1-4-2-1 | CMOS RAM read / write failure | Board / coin cell. |
Insyde BIOS beeps (reported)
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Insyde H2O firmware is used by many Acer, HP consumer, Toshiba and Lenovo consumer laptops. These patterns are reported by repair sites - check the laptop's manual where it has one.
Reported by repair sites - not in an official table. Check the laptop's own manual first.
| Code | What it means | What to check |
|---|---|---|
2 short, 1 long, 2 short, 1 long | No memory, or memory not recognised | Reseat / replace the RAM. |
2 short, 1 long, 3 short | No video device found | Graphics / board. |
3 short, 1 long, 1 short, 1 long | DMA controller failure | Board. |
3 short, 2 long, 1 short | Interrupt controller failure | Board. |
No light, no beep, no code at all?
- Look at the charger's own light. Off = charger, cable or outlet. If it blinks or goes out the moment you plug it into the laptop, there is a short circuit inside the laptop - unplug it.
- Power reset (EC reset): charger out (and the battery if it comes out), hold the power button 30 seconds, then plug in and try again. Laptops with a built-in battery often have a small reset hole underneath.
- Charge it for 30 minutes with the original charger: a deeply empty battery - or a new laptop in shipping mode - will not start at once.
- Remove what was added last (RAM, SSD, cards) and reseat the RAM.
- Connect an external monitor: a picture there means the laptop's screen, cable or backlight - not the board.
- Still dead: it is a board-level fault - charger chip, a shorted power rail, or the BIOS chip. A repair technician measures the rails in their power-on order.
Step-by-step: the no-power troubleshooter
Different code, or still not starting after these checks? Post the code and the laptop model on the NoPowerFix repair forum - board-level technicians answer, and every confirmed fix improves these tables.
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