HP Notebook Laptop LED Blink Codes Error Understanding
Troubleshooting HP Laptop PCs: Understanding Beep and Light Codes
When your HP Laptop PC encounters a hardware error during startup, it may emit a series of beeps or blink specific lights to signal the issue. Understanding these error codes can help you diagnose and resolve the problem. This guide will walk you through the process of identifying and interpreting these beep and light codes, allowing you to take appropriate actions to fix your computer.
NOTE : Audible beep codes are not supported on all models.
Review the following to reference the light blink or computer beep sequence.
The red caps lock light blinks represent a major error category (long blinks).
The white caps lock light blinks represent a minor error category (short blinks).
On systems that do not have a dual-color light, both long and short blinks are white.
Performing a Power Reset
Before diving into specific beep and light codes, it’s often helpful to perform a power reset to clear any temporary data from your computer’s memory. Here’s how to do it:
Turn off the computer: Ensure the computer is completely powered down.
Disconnect the AC adapter & Battery: Unplug the power cord, CMOS Cell & Battery from the wall outlet.
Disconnect peripheral devices: Remove all non-essential devices such as printers, scanners, external hard drives, and USB flash drives. Note: Do not disconnect the mouse, keyboard, or monitor.
Drain residual power: press and hold the power button for approximately 15 seconds.
Reconnect the AC adapter: Plug the power cord back into the wall outlet. Leave peripheral devices disconnected.
Turn on the computer: Power up the computer to see if the issue is resolved.
Common Error Codes
2 Long Red, 2 Short White
Error: Main area (DXE) of the BIOS is corrupted.
Solution: Recover the BIOS.
2 Long Red, 3 Short White
Error: Embedded Controller/Keyboard Controller policy requires you to type a key sequence. Reset the embedded controller.
Solution: Reset the embedded controller by pressing and holding the power button for approximately 15 seconds without the AC adapter, CMOS cell, and battery.
2 Long Red, 4 Short White
Error: Embedded controller is checking or recovering the boot block.
Solution: Reset the embedded controller by pressing and holding the power button for approximately 15 seconds without the AC adapter, CMOS cell, and battery.
3 Long Red, 2 Short White
Error: Potential memory failure.
Solution: Clean or replace the RAM.
3 Long Red, 3 Short White
Error: Potential graphics chip failure.
Solution: Contact a technician or HP Customer Support for further assistance.
3 Long Red, 4 Short White
Error: Potential power system failure.
Solution: Check the adapter or contact a technician.
3 Long Red, 5 Short White
Error: Processor (CPU) not detected.
Solution: Contact HP Customer Support Support for repair due to system board or CPU failure.
3 Long Red, 6 Short White
Error: Processor does not support an enabled feature.
Solution: Contact Technicial.
4 Long Red, 2 Short White
Error: Processor (CPU) might be overheating.
Solution: Check fans & fans signal, Thermal circuit, clean vents, reset CMOS, or replace thermal paste.
4 Long Red, 3 Short White
Error: Computer temperature is too high.
Solution: Check fans & fans signal, Thermal circuit, clean vents, reset CMOS, or replace thermal paste.
4 Long Red, 4 Short White
Error: This condition indicates that the graphics processing unit (GPU) might be overheating.
Solution: Check fans & fans signal, Thermal circuit, clean vents, reset CMOS, or replace thermal paste.
5 Long Red, 2 Short White
Error: Embedded controller is missing valid firmware.
Solution: Program Ec Chip, Reset the embedded controller by pressing and holding the power button for approximately 15 seconds without the AC adapter, CMOS cell, and battery. Contact Technician.
5 Long Red, 3 Short White
Error: This condition indicates that the embedded controller cannot reach the BIOS within the established time limit.
Solution: pressing and holding the power button for approximately 15 seconds without the AC adapter, CMOS cell, and battery. Flash Bios With Bios Programmer. Contact Technician.
5 Long Red, 4 Short White
Error: This condition indicates that the embedded controller reaches its time limit waiting for the BIOS to return from system board initialization.
Solution: pressing and holding the power button for approximately 15 seconds without the AC adapter, CMOS cell, and battery. Flash Bios With Bios Programmer. Contact Technician.
- Solution: Contact Technician.
Conclusion
By understanding the beep and light codes of your HP desktop PC, you can quickly diagnose hardware issues and take appropriate steps to resolve them. Whether it’s performing a power reset, reseating memory modules, or contacting HP support for more complex issues, these codes provide a valuable diagnostic tool. Regular maintenance, such as keeping your system’s BIOS and drivers updated, can also help prevent many of these issues from occurring in the first place.
