i tried soooo Many Thing from so many forums.
but these steps Solved that Damn X on my internet connection, Also that yellow star that was appeared before it beside my Wireless connection..follow these simple steps:
1-Uninstall all Network Connection in Device manager.(dont uninstall software)
2-MOST Important point: Right Click on my computer--> Manage-->Local Users and groups-->Groups--> in right panel Double Click Users
3- Remove all NT_AUTHORITY**** (something like that) from there
4-Scan for hardware changes and let the Drivers
hope this work for u to,if yes pray for me ;-)