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01-23-2023 12:16 PM - edited 01-23-2023 12:17 PM
Hi:
I recommend that you return it because it has a major problem.
If you don't know anything about computers, it would definitely not be something you would want to attempt to troubleshoot on your own.
HP Desktop PCs - Computer beeps or a light blinks during startup | HP® Customer Support
The red light blinks three times, and then four, short white light blinks (3 long red, 4 short white)
This condition indicates a potential power system failure.
Reduce to minimum configuration (CPU, System board, PSU, 1 DIMM of memory), and then isolate the failed component.
Reduce further if issue persists.
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.