Had the same thing happen on a new hp 2214us.... tried for several days to fix problems then brought it back to curcut city.... and received another with no problem. I felt it to be hardware problem but their tech person said it had to do with software ... I had downloaded drivers for it but still did not work... they took it back
i have just purchased a windows pavillion s7700 desktop vista and everything seems to work fine except one item. its a hp.and when i plug my printer into any one of the usb slots it works fine and when i plug my hp or pny flash drive into any of the usb slots it works fine..just not at the same time..if i have both plugged in the usb slots..system recognizes the printer but not the flash drive..says does not recognize...but unplug the printer from any slot and it now sees the flash drive...im exhausted after spending 2.5 hrs on the phone with H.P. and not getting anywhere...ne help..im sorry so long but just trying to get this stuff to work thank you

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