Looping Last Sound When Gaming?

My laptop specs are:

Dell XPS L502x
Intel I7
Intel HD Graphics Family
Nividia Geforce GT 540m
Realtek High Defintion Audio

whenever I game, eventually and randomly, my game will freeze and loop the last sound. I'm not even kidding, it loops the last like half second of a sound which is extremely annoying no matter what it is because it just sounds like a loud thud going on forever. I have to reboot every single time this happens and I think it's hurting my laptop.So many said my laptop may be overheating, so I got a program called SpeedFan, and tweaked it so the temperature offset would be negative which would make my laptop cooler. According to it, it did go cooler with the setttings before/after using the program.The left side still emits heat, but not that hot with the program?

So I was watching the temperatures, before using the program, the temperature was always around 150-170 degrees farenheit, afterwards, it said it was at like -something which the air seemed be cooler or at least the offset measure.I'm not sure if my laptop is overheating, but when I took out the piece on the bottom pinned by 3 screws, there wasn't much dust inside.This all started when I had updated my Nvidia Drivers, I really regret doing this. So stupid game GTA IV can't detect system specs, so you had to use special commands for it to realize what specs you have. If I could, I'd sue them for screwing up my laptop. Everyone told me to update my drivers.Previously, I could play games like Deus Ex Human Revolution fine,I played the entire game twice with not a single freeze and looping sound/crash. Fine.after I installed any of the new nvidia drivers from their website?Occasional freezes and looping the last sound played.It seems that when I had bought this prebuilt Dell Laptop, it had epic drivers for itself and I was never suppose to update the perfect drivers.Then, everything was messed up once I updated my nvidia driver....Maybe, incompatible with the version of my realtek hd audio, that's why i installed all the old drivers from the driver disk the laptop came with. still didn't work, they had corrupted drivers too, or something.So I honestly don't know what to do. I remember a few months ago, I tried downloading a realtek hd audio driver, wow i lost sound for 3 days straight, no one on the internet knew and kept on insisting to install other drivers when I had to type 2 lines in the command prompt.