My Envy PC shut off without warning and won't turn on again.

[Scott_G68]

I was using my PC when it suddenly shut off, and won't turn on again. I've tried the advice given by the HP virtual assistant (unplugging and holding down start button for 15 sec) but it did not work. With the plug in there are no lights on inside the PC. All the internal connections seem fine. My power cable works fine on another PC.

[Raj_05]

Hi @Scott_G68,

Welcome to HP Support Community.

Thank you for posting your query, I will be glad to help you.

It sounds like your HP ENVY Desktop PC might have a power supply or motherboard issue, given that there are no lights or signs of power. Here's a step-by-step guide to further diagnose the problem.

Check the Power Supply Unit (PSU):

• Power Cable: Since you’ve confirmed that the power cable works fine on another PC, the next step is to check the PSU itself.
• PSU Test: If you have access to another PSU, try swapping it out temporarily to see if the system powers on. If the PC starts with the other PSU, then your original PSU is likely faulty.

Check the Power Button Connection:

• Open the case and ensure the power button connector on the motherboard is securely connected. Sometimes the power button connection might become loose.

Inspect the Motherboard:

• Capacitors: Look for any bulging or leaking capacitors on the motherboard. These are small cylindrical components, and if they’re damaged, they could cause the system to fail.
• Burn Marks: Check for any visible signs of damage, such as burn marks or a burnt smell, which might indicate a component failure.

Clear the CMOS:

• Procedure: Disconnect the power, open the case, and remove the CMOS battery (a small, round battery on the motherboard) for about 5-10 minutes. Reinsert the battery, plug in the power, and try to start the system again.

Test with Minimal Configuration:

• Disconnect all peripherals and non-essential components (e.g., extra RAM sticks, GPU, additional storage drives) and try powering on with just the CPU, one stick of RAM, and the motherboard. This can help determine if another component is causing the issue.

Check for a Short Circuit:

• Ensure no metal parts (like screws) are accidentally touching the motherboard, which could cause a short circuit.

I hope this helps.

Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

Alden4

HP Support 

[Scott_G68]

Hi Alden4,

Thanks for the detailed suggestions. I tried the things I felt competent/was able to do myself, and unfortunately none of them did the trick. I don't have a spare PSU to try. I checked all the connections I could see and they are snug. There don't appear to be any problems with the motherboard capacitors or any signs of burning, and I could not find the battery (it may be hidden behind the fan but I don't feel comfortable trying to disassemble things).

Thanks anyways for your help. In the meantime, I've contacted HP support and they've offered to have my unit delivered to a service center.

[Raj_05]

Hi @Scott_G68,

Thank you for your response, 

Is there anything else that I can help you with today?

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

Alden4

HP Support