I'm assuming you changed to Win 7 Home Basic or Premium 32bit System.
First we have to figure out which VGN-CR420 model you have, to do this look on the bottom of your VAIO for the Model/Serial Number tag. On it you should see something like this:
Now that we have the model #, we can get your drivers.
First we will get your Webcam drivers:http://esupport.sony.com/US/perl/index.pl
Now were at Sony eSupport, go to "Software Drivers" (leftside middle of page) click on it. > Option 1. > Choose Country if not USA > Type in Model: VGN-CR420E (use your on model) then click "Continue" > Select Your Operating System > Now we are on your VAIO's page. Look for Camera then click it, the driver file is the "WebCam Companion software" download to you desktop. (easier to find) Open install, Done! There is other good stuff here so bookmark this page!!!
Now for your Bluetooth driver:http://www.broadcom.com/support/bluetooth/update.php
Read all instructions
then click "Download Now" save to desktop. Open > install > done!Thanks for choosing FixYa, If you find this helpful please vote and comment.