You may face ablack screen on your HP laptopif it has any hardware defects. Fortunately, noting the LED blink codes (Caps Lock blinking pattern) lets you determine the possible cause and you may apply the fix accordingly.
If the Caps Lock blinks on your HP laptop with a beeping sound, know that it’s simplyindicating an issue within your system. This usually happens due to corrupted BIOS, system board failure, incorrectly seated memory modules, and other hardware or software issues.
No matter the blink/beep code,performing a hard resetcan sometimes solve any type of issue. This should fix the operating system if it’s failing to load and issues within the connected peripherals.
Identify the LED Blink/Beep Code
Before moving on with the possible solutions, it’s important that you identify the sequence of the Caps Lock’s LED blinking. According to the HP support page, each of these patterns indicates different issues.
Well, you may note the blink code as ‘X.x’ whereX is the long blink(usually in red color) andx determines the small blink(usually in white color). In some models that do not support dual-color light, you’ll only see the white color blinking.
For example, if the red light blinks thrice, followed by four short white blinks, the beep code can be noted as 3.4. Once you’ve identified the code, kindly check the following table to learn the cause behind the HP Caps Lock blinking:
Check Your Power Connections
If the blink code is3.4, your system is experiencing a power failure. This can happen if the power cables or adapters have some sort of issue.
Firstly, we advise checking if yourlaptop charger is broken. While you’re at this, ensure that the external power adapter is providing sufficient power to your system. Also, try using another HP-compatible charger to see if this solves the problem. If it does, you’ll need toreplace the power connector.
Moreover, a problematicHP laptop batterycan also be the culprit. So, try removing it and powering the system using just the AC/DC adapter. If your problem gets fixed, it’s time to visit the nearest repair center toreplace the laptop battery.
Remove All External Devices
The Caps Lock may blink (5.3 and 5.4 codes) if the Embedded Controller isn’t able to reach the BIOS or the waiting time limit for the BIOS to return from the HP motherboard exceeds.
Starting the HP laptop afterremoving all the external devicescan help solve this problem. These include all the USB and HDMI devices, like your keyboard, mouse, headphone/speaker, etc.
Power reset will clear the memory to fix the HP laptop when it’s unresponsive or there are issues with the display. This will also reset the Keyboard/Embedded Controller and fix the blink codes2.3, 2.4, and 5.2. However, this is different for the models with removable and non-removable batteries. Below is a simple guide on how you may do just that:
