[Kryten]

The errors point to both. Atapi is very specifically the subsystem that controls optical drives, the latter is quite clearly a hard drive.

Get your onboard IDE controller drivers/motherboard chipset drivers updated.



Interested to see what happens with DT disabled (may need to actually uninstall it.)
Looking at the errors again, the ATAPI error is pointing at the primary IDE interface - if you've an IDE hard drive there, daemon tools would be the first suspect I think. It would also not suprise me if it's overzealous copy protection software - StarForce rings some nasty bells here if you've anything like TrackMania installed.