I think Seve is implying the kernel is having general issues with the hardware. The Common Kernel Problems describes workarounds specifically for DVD issues, not just keyboard issues. See the section "Can't find installation CD/DVD or hard drives", as directly linked by Seve above, especially the DMA and PCI options.
Note : hit "ESC" key at the graphical install menu. This will get you to a "boot:" prompt. Then (example) :
boot: linux install pci=nomsi,nommconf
This is from my recollection, someone please correct me if I'm wrong.