Having problems getting the system w/ Win7 to run reliably with just the PSU upgrade so far... Factory PSU works fine. However, once I connect the Corsair 850, the system does not boot correctly and forces me to run system restore back to factory defaults before it works correctly again. Also, does anyone know whether or not the SATA ports are addressed? Appreciate any kind advice and assistance so I can start Modern Warefare2 tonight - if possible.