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HP DC7800P SFF won't boot

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HP DC7800p Small Form Factor
Microsoft Windows 7 (64-bit)

I need help to boot this. First, I got 3 beeps but no light. I looked it up and unplugged the USBS, etc. Then I got 5 beeps so I knew that the BIOS was fixed. But after that, I pressed the power button, No fan, no lights, no nothing. I need to fix this as there is some data I want back. The CD drive works. I can't hear anything else. Please help.


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W7 Boot Mgr.png

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