Cd dvd drive is not in bios vista

my CD/DVD drive is not in Bios Phoenix(Acer Aspire). Program verifier.exe in Vista finded cdfs.sys not reeded yet in to drivers,
cdrom.sys reported verifier "is slide out".
Drive was in funktion, after missing and del upper and lower filters was only short to see in device manager. Pleas help Charlie
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  1. Hi Karel,

    What's your OS? x32bit or x64bit?
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