Resolve Windows 10 related issues for your HP computers or printers by HP Windows 10 Support Center
1.) Hp compaq sff 6300 beeping 4 times. No display.
Hp compaq sff 6300 beeping 4 times. No display.
2.) Then: Heard a pop and no computer response.
See the troubleshooting guide at the link below, Appendix A, page 58 for how to troubleshoot the 4 beep code/red LED error.
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