i have a sony vaio-pcv-rs-410 desktop computer, it's about 7 years old, but works pretty good, the only problem is that it won't read disks at all, when i go to start>computer the dvd/cd readers both show up, but if i click on them, and there's a disk in the player it opens up the player automatically, and says there is no disk in the player, the computer has been updated to windows 7, so maybe that's the problem, but what are some things i can do, it used to run on windows xp, but now runs windows 7