I've tried burning .iso, music files, DVDs...and it acts as if its performed the task. But then there appears to be nothing actually written to the disc. When I put the disc in the DVDROM drive and nagivate to it through My Computer I get a message instructing me to insert a disc into the drive. I don't even get the pop up window asking me what to do with the disc. I've uninstalled the DVD writer, reinstalled, looked for updated drivers. I've uninstalled and cleaned Nero off of my harddrive and reinstalled. I used to be able to burn. I can't figure it out. Help...please help.