Blue screen windows 32 bit

Salut ! je me suis acheter un nouveau pc (windows-7) et je ne sais pas pourquoi mais quand je joue a un jeu ou quand je regarde une emission sur un site( skyrim , league of legends, the walking dead, fallout 3 etc)
apres quelque minute de jeux (le temps varie de 2 minute a 1h ) mon ecran "freeze"
et un message de bsod apparait ! aidez moi svp :D !

voici mon messge d'erreur quand je redemarre mon ordinateur
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1033

Additional information about the problem:
BCCode: 101
BCP1: 00000021
BCP2: 00000000
BCP3: 8DB6C120
BCP4: 00000004
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\012114-21325-01.dmp
C:\Users\mehdi\AppData\Local\Temp\WER-44179-0.sysdata.xml

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Voici les informations de mon systeme

OS Name Microsoft Windows 7 Ultimate
Version 6.1.7601 Service Pack 1 Build 7601
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name MEHDI-PC
System Manufacturer System manufacturer
System Model System Product Name
System Type X86-based PC
Processor AMD FX(tm)-6300 Six-Core Processor, 3500 Mhz, 3 Core(s), 6 Logical Processor(s)
BIOS Version/Date American Megatrends Inc. 1101, 1/17/2013
SMBIOS Version 2.5
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "6.1.7601.17514"
User Name mehdi-PC\mehdi
Time Zone Pacific Standard Time
Installed Physical Memory (RAM) 4.00 GB
Total Physical Memory 3.25 GB
Available Physical Memory 1.37 GB
Total Virtual Memory 6.49 GB
Available Virtual Memory 4.30 GB
Page File Space 3.25 GB
Page File C:\pagefile.sys