I'm VERY unhappy with my new rig and I've just recieved it few days ago and it keeps BSODing

RAM:
OCZ3G1333LV2G (OCZ PC GOLD LOW VOLTAGE 2 X 2 GB DDR3-1333 PC3-10666)

Motherboard:
ASRock 890GX Extreme3

HDD:
Samsung Spinpoint F3 1TB HD103SJ

CPU:
AMD Phenom II X4 955

All running as default (stock)

Issue:
BSOD with MEMORY_MANAGEMENT (0x0000001a) and SYSTEM_SERVICE_EXCEPTION (0x0000003b)

OS:
Windows 7 x64 (with lastest updates)

Seller:
Pixmania Portugal

Bought / Recieved:
Several days ago

Code:
Date: 02-10-2010 19:03:08
Bug Check String: MEMORY_MANAGEMENT
Bug Check Code: 0x0000001a
Parameter 1: 00000000`00005002
Parameter 2: fffff780`c0000000
Parameter 3: 00000000`0000a896
Parameter 4: 0000e854`fffffffe
Caused by driver: hal.dll
Caused by address: hal.dll+e76c
This is the second time I do a Windows 7 x64 fresh install and the issue stills.

-------------------------------

1 crash at the windows start and 2 more BSOD

PFN_LIST_CORRUPT - 0x0000004e
IRQL_NOT_LESS_OR_EQUAL - 0x0000000A

-------------------------------

Already POSTED on OCZ forum:
Support Question Possible defective ram combo ?

-------------------------------

Memtest86+ reveals no errors