Acer Aspire 5935G Sound Drivers 64bit?

I have a acer aspire 5935G 64bit running Windows 7 home premium and cannot for the life of me get the internal speakers to work I have been on the acer website and downloaded Audio_Realtek_6.0.1.5932_W7x64W7x86_A as recommended by the site but to no joy.At first I just downloaded and tried to install which didn't work - well it said it did but the little speaker in the bottom left has a 'x' in the centre when clicked it says there is a issue and tries to fix it then fails.My device manager has one failed driver 'with yellow/orange exclamation mark' on high definition audio controller. Other sound drivers that do not have a error are another high def audio controller which are both in the system devices section, and then theres a hdmi audio controller in speakers and sound section. I then tried to disable then uninstall all sound drivers and try again which gave me the same result as above.Now after unstalling it one click on speaker and it installs windows audio drivers which do not work.