my cd/dvd combo reads and burns blank cd roms and will play any pre recorded media. When empty, in my computer, drive is shown as DVD-RAM drive(D:) but if I put any blank dvd in it changes to CD DRIVE(D:) and shows icon of a DVD-R and will not read disk and shows “capacity 0Mbytes” + “free space 0Mbytes” I have tried various media to no avail and also a brand new combo drive only to get the above results. I am running Windows xp (which ive tried reinstalling) 1GB ddr ram with AMD athlon 3000+ 160GB sata hard drive. system works perfectly apart from above.