have a looki in device manager see what it says about it there
just incase you dont know how to get there goto control panel , open the system icon , click the hardware tab then the device manager bit
under dvd/cdrom drives there is a plus sign , open it up and you'll see your dvd type thingy , delete it and reboot (this will re-install it automatically) if your still ahving a problem go back to device manager but this time your ide/atapi controllers , your primary and secondary ide channel ( one of these controlls your dvd) as i dont know which one controlls your dvd (probably the primary) delete em both and re-boot , when it boots back up give windows some time to re-install em and then check yuor player again
im assuming you have win XP if not you'll have to wait for someone who knows what their on about ;0)
I have a PC with both windows ME and XP. My DVD drive, which I use for reading and writing all disks and installing software etc., has suddenly stopped reading disks in windows XP, but still works perfectly in ME. Strangely, I can still burn a disk in XP, but when I insert a data or software disk of any kind it is not showing up and doesn't open. the drive boots up and I can hear it spinning, but comtents can't be viewed. I've tried the firmware update with no success.