In mid august after doing about a weeks worth of research on building computers i took a trip to my local Micro Center to purchase the parts to build a computer to better suit my Computer Aided Design Needs. I employed my fathers help with getting everything set up since he has built a few himself. We had just gotten the computer put together by the time I had to go to work so i left him to set up Windows 7 and the drivers. while at work my dad finished with all the software set up. (i was working overnight 9pm-5am) any way the first time i turned the computer on windows told me that something was wrong and that it needed to roll back to a point in time when windows worked properly, so i said OK and windows did its thing. for a while i had no problems and the system was way better that i had expected. I started noticing that on occasion i would wakeup my computer to find a pop up telling me that windows had recovered from an unexpected error. i didnt think too much of this until recently i got to actaully the dreaded BSOD. i decided to see if the problem persisted before i really started to worry. a week later here i am dumbfounded as to why my computer is throwing stop errors. troubleshooting i have tried: Memtest86+ running all night for 8 passes (no errors) windows memory diag (no errors) chkdsk (nada) Moved RAM to new slots (persisted) i cant figure out what the problem is, my best guess is i have some kind of corrupted system file. the BSOD's can occur at random times, i could be using the computer, or the errors could occur in the middle of the night with no programs open at all. My set up includes : intel DH55TC Chipset Board intel core i7 830 CPU 2x4GB oCZ DDR3 RAM nVidia Quadro FX 580 GPU oCZ 600W power Supply WD 500 GB HDD will follow up later with dmp files have to get to work! Thanks!!