BSOD playing Guild Wars 2, error 0x00000124

Hi folks!

I am completely new to this forum and would really appreciate your help on my problem here.

Ever since i was playing guild wars 2 it happens that i get BSODs, randomly. It crashes in an instant and restarts my pc automatically. I got some infos here about my BSOD and my system. If you need any more information, pls tell me what you need and I will put it up here.

BSOD:

==================================================
Dump File : 100712-9781-01.dmp
Crash Time : 07.10.2012 16:52:06
Bug Check String :
Bug Check Code : 0x00000124
Parameter 1 : 00000000`00000000
Parameter 2 : fffffa80`0a038028
Parameter 3 : 00000000`f6000000
Parameter 4 : 00000000`00040150
Caused By Driver : hal.dll
Caused By Address : hal.dll+12a3b
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+7f1c0
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\100712-9781-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 279.552
==================================================

PC:
Win 7 Ultimate 64x
ASRock Z77 Extreme 4
Intel Core i5 2500k
Samsung SSD 830
AMD Radeon HD 7870 PCS+
ModXStream Pro 500W
DIMM 8 GB DDR3-1333(1500) Kit

Thanks in advance!

Yours
Franz

Edit:
BSOD only comes when playin GW2

Welcome

Go through this thread for best reference:
→ Stop 0x124 - what it means and what to try