Delecson Honor Student
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Troubleshooting of Hp deskjet 656c printer.

After purchasing hp deskjet 656c i upgrade my operating system to window 7, but now i couldn't able to install my hp deskjet 656c in my operating system...... troubleshoot appears that The Driver is not digitally signed  and the other is printer driver was not insalled. opration could noot be completed (error 0x0000007f).

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