RESOLVED : Download and Install Driver for Compaq COProcessor Unknown Device
Finally after so much searching, I'm success to install all the drivers on my Compaq Presario laptop.
Initially I was using Windows Vista, but because many of the problems I get when using Windows Vista, I finally decided to upgrade to Windows 7.
But I forgot to copy my old drivers on Windows Vista, well after I install Windows 7 all drivers could be identified unless there are two that have not been, the "Coprocessor and Unknown Device." I'm trying to figure out what exactly was missing, from the official Compaq websites, forums and turorial that I read and follow none of which worked for me.
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