Hey guys I'm having a problem here. I bought some new kingston ram to add to my system, and its incompatible. I purchases the HyperX 2 x 256mb kit to add to my Gigaram 2 x 512mb kit. All 4 of my ram slots are fully functional. I have booted with both the HyperX and Gigaram individually, but when I try to boot with both windows locks up right when the last loading pass on the windows loading screen comes up. I do not think its a matter of overclocking because I underclocked my processor 1 ghz to see if that was the case and I still had the issue, I also set the ram timings super high to 3-4-4-7. And I STILL had the problem. My voltage for RAM is at 2.8v. By the way this is ddr not ddr2. Do you guys think its just a ram compatibility issue or?