Routine crashing with buzzing sound when playing video games.

I apologize in advance if my post is missing any information; I attempted to follow the directions for properly posting but while I'm am computer functional, I'm not overly computer literate.

I'm running:
Windows 7 Professional computer 64 bit
4.0GB of RAM
AMD Phenom(tm) II X4 955 Processor 3.20 GHz

The system constantly crashes when playing video games and games consistently lag. We have completely re-installed the OS and replaced all parts in the PC at least twice. When the system crashes the speakers buzz loudly, although sometimes it sounds like it's coming from the computer itself.

We switched from Nvidia because everything has checked out and it was hoped that the problem was the hardware not playing nice to no avail. I'm still getting the same error/crash.

The error report that comes up upon reboot is:
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 1033

Additional information about the problem:
BCCode: 124
BCP1: 0000000000000000
BCP2: FFFFFA8005E2A038
BCP3: 0000000000000000
BCP4: 0000000000000000
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\052312-21933-01.dmp
C:\Users\Adam\AppData\Local\Temp\WER-42900-0.sysdata.xml

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Please let me know what I can do to fix this if at all possible; my friends and I have exhausted every last thing we can think of.

All except last one showed up a WHEA error stating that there was a timeout failure of the northbridge bus between CPU and RAM. Commonly this is due to a mobo, RAM or CPU failure. Just to make sure, if you believe your system is stable enough, you can attempt updating your BIOS for your mobo as that can commonly fix things. In most cases however, this is a problem that will only be resolved by swapping hardware.

If you wish, you can run some hardware tests as followed in the order given:

RAM: Memtest86+ - 7+ passes
CPU: Prime95 - Torture Test; Blend; overnight (9+ hours)
GPU: MemtestCL - Run twice (if any of the tests work on your GPU; ATI cards will need to install the ATI APP SDK as it requires OpenCL)

All of these (excluding MemtestCL) are included in the UBCD if you prefer a Live CD environment (which is the best environment to test hardware on). Note that Prime95 currently does not work on the latest version of UBCD. Also, please provide us temps/voltages using HWInfo with Sensors only option checked. Log two 30-minute instances: one for idle, and one for high load. If you can get the system to crash during high load logging, that's even better.

So far it looks like it's near impossible to update the BIOS with Windows 7 64 bit installed; I'm frankly not good enough with computers to revise a BIOS in the BIOS screen safely. I'll work on the tests.

If you have a recent motherboard, it most likely will be using UEFI instead of an ole BIOS, which now commonly has a flash utility built into it. The ones that I've used will be able to access directories in available hard drives and other storage media, which you can just browse to the ROM file that you downloaded from the website of your motherboard's manufacturer and then load it from there. There's far less chance of failure doing it directly from the UEFI than in an OS like Windows.

Still, though, I doubt an update will fix this, and still lean on hardware malfunctioning. Make sure to update us on any test results. Note that software tests for hardware are not a 100% guarantee for finding a problem, but the ones I've provided are pretty solid and reliable.