Windows 8.1 never came with CD, its come with DVD format and DV6000 having DVD reader,
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Eject DVD tray and clean the optical lens on your DVD drive with carefully : use Micro-Fibe cloth
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if your optical drive not recognized the DVD, just Eject DVD tray and clean the optical lens on your DVD drive with carefully (use Micro-Fiber cloth for cleaning)
it should work if DVD in order
also you can use USB flash drive as a bootable
[https://www.microsoft.com/en-us/download/windows-usb-dvd-download-tool|See this link]
spenpaul ,
Windows 8.1 never came with CD, its come with DVD format and DV6000 having DVD reader,
Eject DVD tray and clean the optical lens on your DVD drive with carefully : use Micro-Fibe cloth
it should work if DVD in order
also you can use USB flash drive as a bootable
[https://www.microsoft.com/en-us/download/windows-usb-dvd-download-tool|See this guide]