BSOD anytime, error 0x1000007E

[Sk0b]

Hi,
I buy a new computer and install Windows 7 Home premium 64bit on it,
there is no programs installed except "firefox" and "Whocrashed", blue screens appear anytimes whatever i do
and i don't know why.
I follow the procedure with Sf Diagnostic Tool and attach the zip folder

 

[bagavan]

Run this

http://www.sevenforums.com/tutorials/101379-driver-verifier-enable-disable.html

Also

http://www.sevenforums.com/tutorials/105647-ram-test-memtest86.html

Perform memtest overnight.

Errors might be detected after 8 passes

 

[Sk0b]

Thanks,
I'll do the Driver verifier for 24h and see what's happen
then i'll do the memtest

 

[Sk0b]

My computer crashed again while the Driver verifier was running, what does that mean ?
There was no BSOD but I leave my computer and when I come back The screen was black and the computer didn't respond to anything.
While my computer is running Driver verfier he run slowly, does it's normal ?

 

[Sk0b]

My screen freeze when when i Use driver verifier but there is no BSOD, so I have disabled Driver verifier

 

[Sk0b]

I have done the memtest and he finds me error at the first pass, I attached you a screen if someone can give me more information.
I guess I have to change my ram but do I have to change the two pieces or just one, if yes, wich one ?

 

[bagavan]

Ram is failing. Try one stick at a time. Follow the tutorial link which I gave above