Phele wala uninstall karke...
Agar kuch na huwa tu end mein yeh wala driver install karke dekhana: http://drivers.softpedia.com/get/SOU...2246v189.shtml

IDT ka issue hai Windows 7 ke sath.. Uper wala sabse latest hai ab pata nahi work karye ya na karye.. but at least worth try...