Cd/dvd drive stoped working on Windows7(vaio vgn series)

un install the driver from device manager and restart your comp and then check your cd drive if it works fine if not let me know

Well you have a few options-
The first I would suggest would be to uninstall the wireless printer. It may or may not work. 
Also, thinking back, have you always been really good with making sure the computer stays flat and has never fallen? Sometimes, when the computer is standing on its side or has taken a fall it can ruin the structure of the computer and can severely affect the cd drive. I once had that problem with my laptop and has to wipe it clean and throw it away because it can range anywhere from $500-$700. Although, considering it's not mac I would think it may cost less considering you have so many more resources. 

Hi, if the previous suggestion isn't working you may have a registry error with the upper and lower filter settings.

Go to this link and click the Fix link half way down, if it works yo're done, if it doesn't you may have other issues with the drive but let us know either way.

http://support.microsoft.com/kb/314060


Chris