Directx 11 dont work

hi im tried set up directx 11 and it wont let me im tried console command rewriting config seting it in options im lost count how many time deleted catche tried again deleted wotf tried again and nothing in options is still DX 9 im got dx 11 card GTX 460 and win 7 whit dx confing clearli teling there is dx11 in sistem and updating tellsme im got the newest version how can im turn directx 11 on ?

Sis spec

4 AMD core
4G ram ddr3
GTX 460 786

FAIL (the browser should render some flash content, not this).

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