FEAR, mounts but won't install

Using latest version of DTlite, Windows XP sp3, the game will mount and autoplay, but when i click install it tells me there is no DVD in the drive and unmounts. And when i close the autoplay and try to open the disc it just closes the window and unmounts.

Got YASU to work with DT but tells me that it cant/wont hide the virtual drive, as does latest alcohol with ACID.

If it matters, the only Securom service i can find on my system is UAservice7.exe, and services tells me it is disabled. And i have completely legit games that apparently use securom on my system, and previously installed games that apparently used it.

FEAR is also an MDS/MDF copy of original disc that is no more.

Please help!.