To Resonance,
1. Just because you have not changed a thing with your bios, does not mean it did not reset itself to some setting now incompatible with your ram---a bios reset is possible every time your system crashes.
2. Get thee to the corsair website and see if the ram you have is even compatible with your mobo. If it is, jot down stock timings and voltages.
3. Get thee to your mobo's web site---download a copy of your mobo manual which will contain bios settings. Then jumper reset your bios because it now remembers something you want it to forget.
4. Place in one and only one stick of ram. And in the boot up process---get into the bios before it boots. Follow bios instruction--take your bios off auto spd settings and into manual---set corsair stock timings, and then boot it up. Then run cpu-z which is a free program you should download. What does the memory tab say---what are the reported timings--are you running at the full memory bus
speeds? Go to the spd tab---make sure both sticks report the same spd to the bios. Then shut things down and run memtest86---have the errors gone away---if so shut down and add the second ram stick---fire her up and run memtest86 again---note if memtest86 is seeing the new stick---is it getting errors?---if not let it boot up and run memtest86 again--go to the memory tab---are you running in single or dual channel---did the timings stay put?--are you running at full memory bus speeds?
5. If you are still having trouble---go to the corsair ram forums---you will get a basic recap of this advice---but probably a better version.---especially if you find someone more familiar with your mobo.