BSOD when trying to play games (code d1)

Hello,

Well this, as I can see from this forum is quite a big issue with Windows, and it is annoying as well, when your computer crashes everytime when you try to play a game. Anyway, I am going to point this out from the beginning, I am not an expert in computers, so I would need some help. I got this BSOD everytime when I try to play a game, or when I try to load a game. The code is as follows (this is the information you get after the computer restarts)

BCCode: d1
BCP1: 00000054
BCP2: 00000002
BCP3: 00000000
BCP4: 9765C2A7
OS Version: 6_1_7600
Service Pack: 0_0
Product: 256_1

As I read from Internet, this is usually related to drivers not working properly, but I don really understand hot it goes.
I have a Compaq presario Cq61, Intel Pentium Dual Core T4200 2.0GHz, NVIDIA GeForce G 103M 512MB, Windows 7 Ultimate 32bit.

If anyone could help me find the problem and maybe solve it, I would really appreciate it.

Thank you!

https://www.sevenforums.com/crashes-d...tructions.html

Oh sorry, I've noticed that but after I posted the thread. Anyway here are the reports

And I am using Windows 7 Ultimate 32 bit OEM, but I've reinstalled it half a year ago, not sure about the precise date, System age: about 2 years

A driver from Atheros Communications, Inc is the cause
It is a Lan/Networking driver, upodate it from your computer manufacturer's websiute

Code:

BugCheck D1, {54, 2, 0, 9765c2a7}

Unable to load image \SystemRoot\system32\DRIVERS\athr.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for athr.sys
*** ERROR: Module load completed but symbols could not be loaded for athr.sys
Probably caused by : athr.sys ( athr+492a7 )

Well, I've reinstalled the driver, the one from the manufacturer's website, because I think it was the same as the one I had, anyway, I've opened my games and it seems to be working, hopefuly it will not crash again.
Just one last question, I was wondering, why does the driver of the network caused this, only when I tried to play games, plus I wasn't even using the Internet when I played. It seems a bit odd, I personally was expecting that the graphics board was the problem.

Thank you very much for you help and effort, you are the best!:P