BSOD after building in new Ram

If you have errors, then the ram may be faulty. If you have time you can test each ram module to find the one with problems.

OKay after running the memtest several times, i found out that it only fails at test six, and aroun the block 8256, and thats no longer in my ram range. I searched a bit in the ineternet and found out that sometimes memtest also chec ks the GPU ram, and that ones around 790 MB , so its an error there. The latest nvidia drivers fried up many cards , and i think it did the same to mine. When i have an nvidia driver installed , i get the bluescreens, however when i remove em completly and only work with the windows drivers, it wroks ! so its no lo0nger the ram , but the graphic cards. What can i do ? stay without driivers ? buy new cards ?