No autorun or manual setup from DVD

I have an asus 24x DVD RW and it worked fine until I uninstalled a few of my games so I could reinstall them after I installed a few drivers. it reads the DVD fine, it shows up in my computer, the icon shows up, I can even start the autorun on some instances, but when I try to install it. the installer never shows up, sometimes it even says I need to put in the correct disc, though it says its still in the drive.

the same goes for running the installer through the setup.exe on the disc, instead using the autorun. the installer sort of starts up, then It just quits with no indication why.

the weird thing is, I can manually drag all the files off the disc, and onto my desktop, and install it that way no problem.

but that is incredibly inconvenient and I shouldn't have to do that

I have tried it with 3 different games and non work. some get further than others though, the furthest I got installing from a CD is with crysis warhead and the worst I got was from far cry 2

i have no idea, the cd was still in the drive and the computer was showing that her was still a cd in the drive, so it installed. it didn't install correctly though, the game never loaded up, just a black screen

no good, I deleted all the restore points before I noticed it wasn't working, I have already tried...

I used a registry fixer last night and I was then able to install crysis, but it is back to the same problems this morning, and the fixer doesn't do anything now

Edit: I don't know if this means anything but when I move some icons from the desktop to other folders, they appear to be an unknown file/ generic windows file icon

the icons still work and the names are there, they just don't have the picture anymore. I'm thinking there is a big error with the registry

am I going to need to reinstall windows? is there any way I can do so without losing my data?

that's exactly what I did.... I reformatted and reinstalled and installed both service packs

everything works great now, I defragged and everything is great,

im never gonna mess with registry cleaners, ever again.... ever