I started my new build consisting of a processor- 3.2 ghz pentium 4 prescott Ram- OCZ Reaper HPC 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory Model OCZ2RPR10664GK motherboard- GIGABYTE GA-EP45-UD3P LGA 775 Intel P45 ATX Intel Motherboard haddrive 80gb sata The drive had windows xp on it from another build so i just used it to test. It booted xp fine. It only showed 3gb of ram but i think that was due to it being 1066 and needing me to change bios ram settings. So i took my full version of windows 7 professional that i have used to install on my laptop too and tried to install. I formatted the drive completely and chose to install. It goes through the paces installs. Then when it is supposed to boot from the hard disk the first time it give me a brief blue screen PAGE_FAULT_IN_NONPAGED_AREA so i research it and see it can be linked to hard disk or ram. So obviously its not the disk its been running xp fine and so has the ram. But just in case i switched out the ram with 1gb of old ddr2 800 i had from another build. Same error. I then tried my new ocz ram with a single chip thinking its a dual channel problem. Same error. So then i reburn the microsoft professional image to a new dvd r go through the process again and reformat and still the same error. I have tested all i know to test. Any other ideas?