I'm having a problem with my new DVD/CD writer/reader. When I put in a DVD/CD it starts spining then it stops and HDD LED lits up (no blinking). It doesn't read anything. But I can write with Nero - no problems.
I re-installed Windows, and the first DVD I put in worked, but then it stopped working (might have something to do with MagicISO). Tried to re-install Windows again - didn't work.
I also tried to remove Lower, Upper filter in regedit, but they aren't there.
I presume that you also checked the power cable? Except for that unit, does a drive from another system work fine in yours? If so and if you can't swap it, just get a new one as they are rather inexpensive.