CANT TURN OFF HARDWARE ACCELERATION? :(

HI, im using nilly client and nilly say we have to have hardware acceleration off, to see hp bars etc..
BUT I CANT I have gone into Appearance and Personalisation, then clicked Adjust Screen Resolution, then Advanced Settings, I click Troubleshoot but the Change Settings button is greyed !!!

also my graphic card i think is nvidia

Lolno
Wrong Hardware Acceleration
IN-GAME on nilly's client, press O to bring up the options menu.
Then, go to graphics and make sure the 'hardware acceleration' box is switched to off.

Hopes this helps

-Pi