When you look in windows explorer do you see 2 DVD drives ?
How does the dvd do as far as burning dvd's ? I think that it might be the drivers for the dvd as opposed to the mainboard. Do you have the dvd on the primary or secondary IDE port ?
I had something like this happen with a DVD drive. I installed a trial ver of Gear's dvd burner then removed the program. Apparently the program replaced some of my DVD drivers, which was evident when I went to control panel \ system \ hardware \ devices right clicked my dvd drive and selected properties, then drivers tab, then driver details. When I scrolled down there was a driver called something like gearaspi.sys. Gear claims other programs use this driver . Thats why I asked about the 2 DVDs in windows explorer, I had 2 dvd players, and there were a lot of simularities with yours and what mine did plus mine would not burn DVDs. I think the uninstall program removes some of the reg stuff and leaves the drivers behind...anyway they gave me a link to DL a program ( actually 2 progs, the driver one is the one) that just reinstalls all the dvd drivers including the gearaspi, I think it also corrects the registry also. If you can not get yous to work try DL the their drivers may work or make it even worst
I think it was this one
make sure you get the whole URL and rember I have no idea if it will work or not... if you try copy and paste into your browser