- Notes, cautions, and warnings
- Before working inside your computer
- After working inside your computer
- Technical overview
- Removing the stand assembly
- Replacing the stand assembly
- Removing the back cover
- Replacing the back cover
- Removing the optical drive
- Replacing the optical drive
- Removing the hard drive
- Replacing the hard drive
- Removing the memory modules
- Replacing the memory modules
- Removing the wireless card
- Replacing the wireless card
- Removing the heat sink
- Replacing the heat sink
- Removing the fan
- Replacing the fan
- Removing the coin-cell battery
- Replacing the coin-cell battery
- Removing the microphone
- Replacing the microphone
- Removing the camera
- Replacing the camera
- Removing the system board
- Replacing the system board
- Removing the VESA-mount bracket
- Replacing the VESA-mount bracket
- Removing the speaker cover
- Replacing the speaker cover
- Removing the speakers
- Replacing the speakers
- Removing the control-buttons board
- Replacing the control-buttons board
- Removing the display assembly
- Replacing the display assembly
- Removing the rubber feet
- Replacing the rubber feet
- Clearing Forgotten Passwords
- Clearing CMOS Settings
- Flashing the BIOS
- System diagnostic lights
- Getting help and contacting Dell
Inspiron 24 3000 Service Manual
System diagnostic lights
The computer POST (Power On Self Test) ensures that it meets the basic computer requirements and the hardware is working appropriately before the boot process begins. If the computer passes the POST, the computer continues to start in a normal mode. However, if the computer fails the POST, the computer emits a series of LED codes in amber color during the start-up.
The following table shows different light patterns and what they indicate.
| Number of Power LED flashes | Problem description |
|---|---|
| 1 | System board: BIOS and ROM failure |
| 2 | No memory or RAM detected |
| 3 | System board or chipset error |
| 4 | Memory or RAM failure |
| 5 | CMOS battery failure |
| 6 | Video card or chip failure |
| 7 | CPU failure |
| 8 | Display failure |
|
3,3
(Three amber color LED flashes followed by three white color LED flashes.) |
BIOS recovery image not found |
|
3,4
(Three amber color LED flashes followed by four white color LED flashes.) |
BIOS recovery image found but invalid |
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