I have a three-year old (long out of warranty) Dell Dimension E521 with a TSST corp DVD+-RW TS-H653A SCSI CdRom device. I run Vista Home Premium. The problem is the DVD drawer seems to open for no reason. It sometimes happens at start-up, sometimes when I shut the computer down, and sometimes when I’m just surfing the web. It sometimes happens several times in a few minutes, but it can also be fine for a week or so and then start acting up again. I don’t know if this is a hardware or software issue but I ran AVG Free, AdAware, Spybot S&D, Windows Defender, Disk Cleanup and Disk Defragmenter, and the problem remains. Any suggestions? Thanks in advance.

If your machine is 3 years old. You might try a good cleaning. You can use compressed air (after the machine has been unplugged) that you either have at your disposal or get the kind in a can. If you open the case try removing and reattatching the cables to your drives also. Sometimes corrosion can get to them. When the drawer is open blow it out also.