Hello, The following is my laptop spec: Technology TL-60 1.99Ghz, 1.87BG of Ram, Physical Address Extension Matshita DVD-Ram UJ-860H Windows XP Professional Version 2002 Service Pack 3 Now, whenever I insert a cd on my Matshita DVD-Ram UJ-860H, it shows this error message: "D:\ is not accessible. Incorrect function". I experience the same whenever I insert a blank dvd rw. However, if the dvd rw is not blank then I am able to see the contents of the dvd rw disc without getting this error. What is wrong ? On my Windows Registry, I have 24 instances of this: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318} and on more than one of then the "Upper Filter" exists therefore I am unable to decide which one's "Upper" I should delete to see if the problem gets fixed or not. I have seen on many forums others experiencing the same and getting advised to uninstall Roxio but I don't think I have it or the Nero because I can't find them on my Start-> All Programs. And, I don't think that, me not having a cd burner software is the problem because like I mentioned before, I am able to see the contents of a dvd disc inserted on my dvd drive providing the disc is not empty. I have seen the following solution mentioned on the internet: "Got to the Drive letter in Windows Explorer and right clicking on it. Go to Properties; Click on Recording; Check "Enable CD recording on this drive". But the problem is, I can see only this much on my WinXp SP3: Windows Explorer-> DVD-Ram' and after right clicking on it -> Properties; but there is no "recording" tab. Therefore, I cannot check the "Enable CD recording on this drive" option. I am really stuck now ! Can some techie specialist help ? Thank You