Pavillon won’t boot up

[Csaling]

My desktop tower won’t boot. The light on the back indicates it’s getting power but the power up button does nothing. Any suggestions?

[Kuroi_Kenshi]

Hi @Csaling,

Welcome to the HP Support Community! 

Thanks for reaching out about your query regarding your device not booting up!  

We're thrilled to have the opportunity to assist you and provide a solution.

It sounds like your desktop might be facing a power issue or an internal component malfunction. Here are some steps you can try to troubleshoot and potentially fix the issue:

Check Power Supply Connections

1. Turn off the desktop and unplug the power cable from the wall outlet.
2. Check if the power cable is properly connected to both the power outlet and the back of the tower.
3. If you're using a power strip, plug the desktop directly into a wall socket to rule out any issues with the power strip.
4. Double-check if any cables connected to the motherboard, such as the 24-pin ATX power cable and 8-pin CPU power cable, are properly seated.

Perform a Power Reset

1. With the desktop powered off and unplugged, press and hold the power button for 15-20 seconds. This will discharge any residual power in the system.
2. After the reset, plug the desktop back in and try turning it on again.

Inspect Power Supply Unit (PSU)

1. If your PSU has a power switch on the back, flip the switch to Off, wait for 10 seconds, and then switch it back to On.
2. If the PSU has a built-in indicator light, check whether it is lit up. If the light is off or flickering, the PSU might be faulty and could need replacement.

Check the Power Button

1. Sometimes, the issue may be with the power button itself. If you’re comfortable, you can try short-circuiting the power switch pins on the motherboard using a flat-head screwdriver. This bypasses the button and powers on the system.
2. If this works, the power button may be faulty and needs replacement.

 

[Kuroi_Kenshi]

Disconnect Unnecessary Peripherals

1. Unplug all peripherals (USB devices, external hard drives, monitors, etc.) from the desktop, leaving only the power cable and the keyboard/mouse connected.
2. Try turning the system on again. If it powers on, one of the peripherals might be causing the issue.

Inspect Internal Components

1. Open the case (make sure you're grounded to avoid static discharge).
2. Check if any components, such as the RAM or graphics card, are loose.
3. Reseat the RAM sticks and the GPU if necessary (remove and reinsert them into their slots).
4. Ensure that no cables or wires are pinched or disconnected.

Test the PSU

If you suspect the PSU is the issue, you can use a PSU tester to check its output. Alternatively, you can try jump-starting the PSU:

1. Unplug the PSU from the motherboard.
2. Use a paperclip to short the green wire (PS_ON) to any black wire (COM) on the 24-pin connector.
3. Plug in the PSU and turn it on. If the fan inside the PSU doesn’t spin, it’s likely faulty and needs to be replaced.

Check for Motherboard Issues

1. If you’ve tried all the above steps and the system still doesn’t boot, there could be an issue with the motherboard. Check for visible signs of damage (such as burnt components or bulging capacitors).
2. You may need to consult a professional technician to diagnose further if the motherboard is suspected to be the issue.

Let me know how it goes with each of these steps! If none of them work, I’d recommend contacting a technician to test the internal components more thoroughly.

I'm glad I could help! 😊 If this resolved your issue, please mark it as "Accepted Solution" and click "Yes" on "Was this reply helpful?"—your feedback not only keeps us going but also helps others find the solution faster! 👍✨

Take care and have an amazing day ahead! 🚀

Best regards,