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When I turn on my desktop, the fan starts running and stuff, but the screen stays black. Then it makes beeps in patterns of 3 and 4. It just continues doing this. Does anyone know how to turn it on all the way and stop the beeping?

1 REPLY 1
HP Recommended

hi

HP Desktop PCs - Computer Does Not Start and Emits an LED or Beep Code | HP® Customer Support

The red light blinks three times, and then four, short white light blinks

This condition indicates a potential power system failure.

  1. Reduce to minimum configuration (CPU, System board, PSU, 1 DIMM of memory), and then isolate the failed component.

  2. Reduce further if issue persists.

  3. Test your system with a known good PSU.

Contact HP Customer Support for further assistance to replace the component, system board, processor (CPU), or PSU if the issue persists.

 

check it may be like this

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