You need to download small 1 mb software of real hack and also nvidia/ati graphic card...compulsorily either and any of them :)
I have an AMD Radeon HD 6450. This enables realview but it only affects floor reflection unfortunately. The models don't have any reflection.
may be you can try upgrading your graphic card drivers...also cross check the list of solidworks realview graphic supported graphic card with your model number ...most probably driver update would be required