windows 7 blue screen on W510

[freakwave]

Hi all,

just wanted to find out if you have stability issues with the machine.
Mine is crashing once every day.
The problem is that I do not always get a blue screen.
Sometimes I just get a very weird image on my screen and it just freezes.
Today I got a blue screen with ksecdd.sys being the issue.

I know the memory sticks are ok, since they are from my old T510 which had no issues.