BSOD problems - tried everything, need assistance

[laban]

I've tried everything listed in the "Read this before you post your minidumps" and still no luck. I thought I've gotten rid of the problem by removing a newly installed RAM stick. Everything worked fine for a short week, and then bam...BSOD again.

I've included some of the latest minidump files and hope for some expert help.

Best regards from Laban, Norway