HP PC start and stop loop with green light dimming.

[dmg6]

Accidentally bumped my old HP PC, it turned off and began a cycle of trying to turn on with the fans spinning for less than a second and the green light dimming to almost nothing when the fans stopped. Tried replugging in the power cord, visually inspecting the inside (without touching), and bumping it again as a last resort. Is the power supply unit ruined or is something else wrong? Any way to fix it without buying new parts or is the PC (or a part like the psu) toast?

[Nal_NR]

Hi @dmg6,

Welcome to the HP Support Community. 

I'd be happy to help you! 

I appreciate your efforts in trying to resolve this issue by performing the necessary troubleshooting steps.

If your HP PC is stuck in a start-and-stop loop with the green light dimming, it could indicate a hardware or software issue. Here are some steps you can try to resolve the problem:

Check Power Supply: Ensure that the power cable is securely connected to the PC and the power outlet. Try using a different power outlet or power cable to rule out any issues with the power supply.

Reset the PC: Turn off the PC completely and unplug it from the power source. Wait for a few minutes, then plug it back in and turn it on. This can sometimes resolve temporary issues.

Check for Overheating: Ensure that the PC is not overheating. Check the fans and vents for dust buildup and make sure they are clean and free of obstructions.

Disconnect External Devices: Disconnect any external devices such as USB drives, printers, or external monitors. Sometimes, a malfunctioning external device can cause the PC to enter a start and stop loop.

Update BIOS: Check if there is a BIOS update available for your PC on the HP website. Updating the BIOS can sometimes resolve hardware compatibility issues.

Hardware Diagnostics: Run hardware diagnostics to check for any hardware issues. Most HP PCs have built-in diagnostics tools that you can access during startup.
 

If none of the above steps work, it may indicate a more serious hardware issue. In this case, it's best to contact HP phone support.

 If the information I've provided was helpful, give us some reinforcement by clicking the Accepted Solution button, that'll help us and others see that we've got the answers!t