Hi, have joined to resolve a similar problem with my Vaio laptop.
I have no problems playing DVD's but I cannot read or play CDs. I have removed all sorts of programs that might cause conflict and have left WMP as the only player. Today it recognised a CD, started playing the first track, played about 3 seconds then hung. Have contacted Sony support and they are recommending a full recovery - which is a mission as I would have to back up all my data. It seems quite a simple fix - I simply lack the know how.
I have tried removing and reinstalling the drivers to no avail. If anyone is able to offer suggestions, I would be most pleased. Vaio has about a month of warranty left. Thanks