which installation should I try?

I am very new to Linux. I have tried the installation of Linux Mint 64-bit version.

All of the audio stopped working on my PC and I have not been able to resolve it so I am going back to square one.

I have an HP Pavilion dv8110us 1.8 ghtz 320 GB HD 2GB of RAM with an AMD Turion64 bit processor. (I don't know if all of that is pertinent but there we have it

When installing the Linux Mint I could not get it to automatically set up the HD partitions so I did it manually but I don't remember what the sizes were. So as much info as possible is appreciated.

I am mostly a PC user not much into programming.

So,

1) What install might I want to try?

2) is there a 64 bit version of the OS that is stable enough to try? ( I wanted to to use the a 64 bit OS if possible)

3) specifics on how to install in case the automatic partitioning does not work again.

any and all help is appreciated !

thanks,

Eric