I've got a relatively powerful machine, so I'd like to take advantage of my Nvidia graphics card (Sandy Bridge chipset -- i7, 8 GB of RAM, etc)

I have a Nvidia GeForce GT 630M 2 GB graphics card, but my machine currently defaults to the integrated Intel 3000 graphics.

I have the open source Nouveau drivers installed, but they don't seem to work. I've tried purging them and installing the proprietary Nvidia drivers with no luck.

I'm running Linux Mint 15 Cinnamon edition. I've tried installing both the drivers in my distro's software center as well as the ones recommended by Nvidia (they are different drivers), but neither worked.

I've tried this a few times already; and both times I tried installing the Nvidia drivers, I broke my machine and had to completely re-install the OS. I'd like to avoid that, so I'm looking for advice from people who've successfully done this.

If you need further information to answer the question, I'll be happy to provide it!

thank you

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