I have Asus P5NSLI - NVidia nForce 570 SLI Intel Edition motherboard and it used to run: Pentium D 915 2.80GHZ/4MB Cache/800Mhz FSB/Dual-Core/Preseler/OEM/Socket 775 dual core processor. Recently I have installed Intel Core 2 Duo E6600 - Conroe - 2.40Ghz, 1066FSB, L2,4MB cache and right after I have installed system booted up fine (normal POST) and then attempted to load windows and BSOD and reboot. At the time I was running BIOS rev. 0601 (first-release) I have gone to ASUS website and was told that the ver of BIOS is good and it is not required to upgrade but computer still was doing BSOD upon bootup. I have decided to upgrade to latest rev. of BIOS which is now ver. 1401 and the BIOS upgrade went smooth but after computer restart would not boot windows at all. Re-installed windows, did updates and re-installed drivers for all connected devices and system is up and running again but still the BSOD persists and sometimes it will take 3 reboots for computer to come up properly to desktop and load all of the icons in the system tray. I have no clue of what is wrong. Can somebody pls examine the dump file and let me know where the issue is? Hardware or Software? I am attaching 2 DMP files that I was able to locate in C:\windows\minidump. Thank You very much in advance for all the help. Happy New Year 2008!