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I got my HP prodesk 400 G6 small form factor PC. Not starting. No light no nothing. Checked out and when I unplugged power cable to CPU, 3 long and 4 short beeps occur. It's must be a CPU problem. Tested with different power supply but same problem. Anyone please assist.

IMG_20230710_083020_050~2.jpg

 

Will greatly appreciate your contribution.

Thanks. 🙏

 

 

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