Problem with Kingston Memory

[liviu30]

Hello,

This is my first post here and i hope i can get an answer to my problem.

my pc confoguration looks like this

MOBO : Asus P5Q3
PSU : Chieftek 550W
Video: Geforce 250 GTS
HDD: Kingston SSD NOW 32 Gb (for system)
Memory : Kingston hyperx KHX1333C7D3K2/4G

now the problem:

I recently bought a second DDR3 kit KHX1333C7AD3K2/4G (notice the bold A because i didnt noticed it)
i installed these also as follows

SLOT0: KHX1333C7D3K2
SLOT1: KHX1333C7AD3K2
SLOT2: KHX1333C7D3K2
SLOT3: KHX1333C7AD3K2

loaded BIOS defaults, everything worked nice for some minutes then BSOD. rebooted again everything fine for some minutes then PC freezed.

now im noob when it comes to BIOS settings so im asking u guys to help me setup the bios for my current config or maybe u know if there is any incompatibility problem with the 2 Memory kits and my Mobo.

thank you.

 

[liviu30]

forgot to mention im running Windows 7 Ultimate x64

 

[liviu30]

anyone please? tell me what additional info i can provide