I have a Compac Presario 2500 (2570us) Laptop with a Toshia DVD Rom Drive SD-R 2312. The DvD drive started to give a error message. "C:\program~\symantec\532event|,dll. An installable Virtual Device Driver Failed dll initialization." Would not read some disc. Drive is working. Error message shows up on all cd or dvd. I have Windows XP installed. Recently. I installed Explorer 8 then a week later uninstalled Explorer 8 may have something to do with the error. Not sure because the DVD drive has not been used for months. Just a thought. How can I fix this problem?