10 days ago I received a new HDD from WD after the first one failed SMART. The PCB of the new HDD had some discoloring and kinda rusty look around the screws, but installed OK and passed SMART and Disk Check with three different utilities. The problems started after I tried to run the new Call of Duty:BO. Within minutes of starting the game the PC would BSOD severe. By severe I mean that different systems would fail to boot, mainly DRAM, but also VRAM and "bootable device" (never CPU). I reinstall Windows but the problem persist, mostly when I try to watch a movie. All my drivers are up to date, also all win updates are done. Running win7 Home x64 and MSE for antivirus. I already started RMA for both RAM(it gives sometimes errors with memtest) and HDD(because of the rust on the PCB) and want to know which one exactly it is. The thing with the RAM is that it was OK before the new HDD and with the HDD- SMART is OK, also no bad sectors. My system: Asus Crosshair IV Formula AMD 890FX G.Skill RipJaw 4GB (2x2GB) DDR3 PC3-10666C8 Corsair tx650watt EVGA GeForce GTX 460 Superclocked 1024MB AMD Phenom II X4 Quad Core 965 Black Edition "125W Edition" 3.40GHz Including the last 2 minidumps from today, Thanks in advance!