strange camera, brightness and bluetooth issue

hi friends I'm new in this forum. I had asus g 73jh-a1
I did a clean install by following kalims guide.

http://forum.notebookreview.com/asus/468027-complete-walk-through-doing-clean-windows-7-install.html

thanks kalim...... ( creative drivers never installed )


I upgareded my bios to 2.11 by using a usb stick. then upgareded my vbios by typing vbios....

I had a strange issue. when I restart my pc I can use my camera, bluetooth and brighness level. after 20 min ( some times 5min sometimes 40 min). (sometimes when I playing games I hear a usb removing sound then I cannot use them)

I cannot use them with these warnings " no camera device found", "no blue tooth device found" vs..... and fn f6 and fn f5 does not working (I can see blue brigthness up and down picture but it is effectness) . I am from Turkey . in my country this model is not available so I cannot find any forum in my language.

I can change volume level, and fn f4 fn f3 works correctly.

I think I had same problems before I flashed my bios(but I cannot sure).
how can I fix these problems plese help me.
thanks.......

 

this problem appeared again today. bluetooth and camera goes again.