I am looking at purchasing an Alienware M18x R2. It has 24gb ram and dual gtx680's with about 500gb ssd and an i7 2.7gh processor. I've been informed that the sound goes out intermittently and may throw a DOS error intermittently but none of that affects any other aspect of the laptop and might be remedied with BIOS/Driver updates. The price is around $900. Should I buy?