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I Have a problem with my pc hp z420 xeon Tower system
management platform (me) in manufacturing mode hp z420 fix key board not work
when i start pc my pc has ecounters an error management platform (me) in manufacturing mode hp z420 fix key board not work ,on this stage when i press key any button key board not respond not Mouse work, BIOS Key on the keyboard not work hardly 2 hours later than problems seems please gave me a solutuion .

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