I had the same problem with my VGC-LT33E Model. I did a clean install of the Windows 7 in 64 bit. I was unable to use the Sony MPEG RealTime Encoder from my model downloads. So I went to a more recent model that has the Windows 7 64 bit option already installed. I used the Model VGC-LV290 J/B and downloaded the Aver media A313 Mini Card Pure Analog TV (file AVDTVT-00216142-0042.exe.)
After you download you must install it from the Device Manager. Click on the device that indicates is missing and install from there by using "browse my computer" and using "have disk" options. Then find the file on you computer and click until you get the inf. file it will take you to a list. I picked the Aver Media A313 Mini Card Pure Analog TV. I got a warning may not be compatable. I ignored and it installed successfuly. So far no more missing device and the computer is running smoothly. Hope this helps. Also I downloaded some of the software from this model that I could not get from my models downloads and installed successfuly as well (Movie Story, Roxy Easy Media Creator, etc) . Hope this helps. Reminder, If you have another Operating System, be sure to select that one for the compatable driver.