I have a Vaio PCG-R505DL laptop. When I insert a cd, or dvd it rarely plays. Most of the time it doesn't even recognize there is a disk in. Obviously I can't burn cd's either. I get an error asking me to insert a blank disk in the drive. I had originally thought the problem was with the hardware and replaced the docking station. It's still doing the same thing. Is there anything that can be done?