Hi, I've been using the RC for a while now and it's been completely, 100% stable, so I'm sure the RAM is causing the problem. I bought two more sticks of ddr2 800 ram (1 gig each) for a total of 4 sticks and 4 gigs of ddr2 ram on my computer. These are both from the same supplier (Transcend) and are totally identical sticks (however, one has the memory modules on one side only, I don't think that matters. I recieved a bluescreen on installing the new ram. I restarted and was asked to repair win 7's startup, which didn't work. I tried taking a stick out and repeating the process, which gave me a bluescreen w/ PAGE_FAULT_IN_NONPAGED_AREA as an error. Afterwards I raised the voltage from 1.8v to 1.85v, then to 1.9v, then back to 1.8v, and still nothing (though right now the two 1Gig sticks are running fine at 1.85v, so the voltage shouldn't be the issue either). Afterwards I changed the RAM timings in the BIOS to 5-5-5-15-20 just in case there was some discrepency in the timings. This didn't work and I got the same error. The new sticks are NOT defective, since I removed the old sticks and replaced them with the new sticks (so I'm still at 2GB). Win 7 works if I do that. The memory diagnostic built into win 7's admin tools found no errors with either set of RAM. So, ideas? I'm pretty sure the motherboard isn't the case since it allows for up to 4 GB of DDR2 RAM up to 800mhz. Someone told me I might have to change jumper settings or clear cmos ram. I'm totally lost right now.