my system doesn't recognize the ethernet cable after upgrading from vista to windows 7.also my web always displays no input sonyvaio vgn-cr21z/r.please give the directives..louisofosu@yahoo.com
no input
Please write your question fully since I can't understand what you are trying say a PROBLEM / ERROR.
Please try download the latest network driver from Realtek site supports Windows 7.
Good Luck. 8)
Try this link to download the appropriate drive http://esupport.sony.com/perl/select-system.pl Good Luck.