Envy all in one no power. Blinking lights

[BB2K]

Computer does not power on. Power switch flashes 3 slow times and then again 4 times fast while attempting to make a clicking sound

[Nal_NR]

Hi @BB2K,

Welcome to the HP Support Community. 

I'd be happy to help you! 

The behavior you're describing with your HP ENVY Curved All-In-One - 34-B135se, where the power switch flashes three slow times followed by four fast flashes and a clicking sound, indicates a hardware issue. These flash codes are typically diagnostic indicators that can help identify the problem. Here's a step-by-step guide to troubleshoot this issue:

Understanding the Flash Codes

The specific pattern of flashing lights and sounds often corresponds to an error code that can help identify the problem. In HP desktops, a combination of flashing lights can indicate specific hardware issues, such as problems with the CPU, memory, or motherboard.

Troubleshooting Steps

Check the Power Supply:

• Ensure that the power cable is securely connected to both the computer and the wall outlet.
• Try plugging the computer into a different power outlet to rule out issues with the outlet.

Perform a Hard Reset:

• Disconnect all peripherals and the power cable.
• Press and hold the power button for about 15 seconds to drain any residual power.
• Reconnect the power cable and try turning on the computer again.

Inspect Internal Components:

• Open the case and visually inspect the internal components. Ensure that all connections are secure.
• Check for any signs of damage or loose cables, particularly around the power supply and motherboard.

Reseat Memory Modules:

• Power off the computer and unplug it.
• Open the case and locate the memory modules.
• Carefully remove and then reseat the memory modules to ensure they are properly connected.

Remove and Reinstall the CMOS Battery:

• Disconnect the power cable and open the case.
• Locate the CMOS battery on the motherboard, remove it, wait for a few minutes, and then reinstall it.
• This can sometimes resolve issues related to BIOS settings.

Kindly find the next set of steps in the next post.  

Hope this helps! Keep me posted for further assistance

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.

[Nal_NR]

Hi @BB2K,

Please find the next set of steps below. 

Check for POST (Power-On Self-Test) Codes:

• Pay attention to any additional beeps or error messages that appear on the screen during the initial power-on sequence. These can provide further clues about the nature of the problem.

Diagnostic Steps

If the above steps do not resolve the issue, consider the following diagnostic steps:

HP Support Assistant:

• If you can get the computer to power on, run the HP Support Assistant for diagnostics and potential solutions.

Use HP's Online Diagnostic Tools:

• HP provides online diagnostic tools that can help identify and troubleshoot hardware issues. Visit the HP Customer Support - Diagnostics page. Click here

If you are not comfortable performing these steps or if the issue is not resolved, contact phone support for repair options. 

Hope this helps! Keep me posted for further assistance

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.