I have MCE and xp-64 on a RAID-0 stripe of two 36GB raptors. I also have two other 40GB IDE drives on the system. Whenever I do some heavy reading or writing from these IDE drives the system BSOD's and gives me a machine check exception error. I am running a DFI Lanparty SLI-DR, Athlon 64 4000+, two 7800GTX's in SLI and I have a Sliverstone 600Watt PSU. Any ideas, is there an issue with IDE activity in NF4 boards?