Windows 7: Perfect World : Bluescreen after some minutes

Hi guys, i've never had a blue screen before untill i stepped over from Wi7 Build 7000 X64 to Build 7068 X32

First blue screen started @ Battlefield heroes, and afther that i installed Perect world and started playing but afther a couple minutes my pc crashed and went to that nice beautyfull BSOD.



Can anyone help me what the problem can be and help me solving it .

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7068.2.0.0.256.1
Locale ID: 1033

Additional information about the problem:
BCCode: 124
BCP1: 00000004
BCP2: 8553F024
BCP3: 00000000
BCP4: 00000000
OS Version: 6_1_7068
Service Pack: 0_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\033109-18891-01.dmp
C:\Users\Dont Hate\AppData\Local\Temp\WER-38282-0.sysdata.xml


Thanks in advance.