Problems in laptop

[PS2009]

In my laptop Black screen appears while using, capslok blinks 3 time with very short breaks then blink twice at same time ,total 5 time capslok key blink 

Anyone please give me any solutin

[Hawks_Eye]

Hi @PS2009 

Welcome to the HP Support Community! We're here to help you get back up and running.

Thanks for explaining the issue so clearly—it’s genuinely alarming when your laptop shows a black screen and starts blinking codes without warning. 

The Caps Lock blinking pattern you described—three short blinks followed by two simultaneous blinks (total five)—is a diagnostic signal used by HP to indicate a hardware-level fault, often related to memory (RAM) or embedded controller failure.

Let’s walk through a structured recovery approach to help stabilize your system.

 

Step-by-Step Recovery Guide

 

1. Perform a Hard Reset

This clears residual power and resets hardware connections.

• Power off the laptop completely
• Disconnect the AC adapter and remove the battery (if removable)
• Press and hold the power button for 30 seconds
• Reconnect power and try turning it on

 

2. Reseat the RAM Modules

Improperly seated or oxidized RAM contacts can trigger blink codes.

• Power off and unplug the laptop
• Open the back panel and carefully remove the RAM sticks
• Clean the gold contacts with a dry microfiber cloth
• Reinsert them firmly into the slots
• If you have two modules, try booting with one at a time

 

3. Run HP UEFI Hardware Diagnostics

This checks for deeper faults in memory, CPU, and motherboard.

• Power on the laptop and immediately press Esc repeatedly
• Select F2 for diagnostics
• Run the Extensive Test on memory and system board
• Reference: HP PC Hardware Diagnostics UEFI

 

4. Reset BIOS (if accessible)

Corrupted BIOS settings can cause boot failure.

• If the screen turns on briefly, press Esc or F10 to enter BIOS
• Choose Load Setup Defaults, then save and exit
• If BIOS is inaccessible, try BIOS Recovery:
  • Press and hold Windows + B, then press the power button for 2–3 seconds
  • Wait for BIOS recovery screen to appear

Reference: HP BIOS Recovery Guide

 

What the Blink Code Means

According to HP’s blink code documentation:

• 3.2 or 3.3 blinks often indicate RAM failure or graphics chip fault
• 5.2 or 5.3 blinks may point to embedded controller issues, which can affect BIOS communication

If the issue persists after reseating RAM and running diagnostics, it may require a service-level inspection of the motherboard or embedded controller.

I’m truly sorry this has disrupted your work—it’s exhausting when a system fails without clear warning. If diagnostics confirm a hardware fault, then this needs hardware teams intervention. 

Let’s get your laptop back to reliable performance.

If my response helped, please mark it as an Accepted Solution! ✅ It helps others and spreads support. 💙 Also, tapping "Yes" on "Was this reply helpful?" makes a big difference! Thanks! 😊

Take care, and have an amazing day!

Regards, 

Hawks_Eye