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Userone2
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Design jet T120

HP Recommended
CO891-64001

At switch on, blue screen and error code B8040008 , is there a fix ? 

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Repairatrooper
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Either the usb thumbdrive has failed or the formatter is bad. In the past you had to replace the formatter but HP now has an orderable usb thumb drive that you install on the system board and in most cases this fixes the problem. The part number is CQ890-67105. 

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