Back in December, a couple days before Christmas, I went to microcenter to get parts to build a gaming pc for my youngest brother. I bought a 2x4gb kit of crucial ballistix sport 1600mhz ddr3 ram and it worked for a month until two days ago he got a BSOD while playing BF4. I restarted the PC and it kept giving me a BSOD a second after I logged in. I tested each stick of ram with memtestx86+ for an hour each. One stick passed the test 100% and the other was 110% dead. Last time I had ram fail there was a small sector of memory that was defective and I would only bsod every few days when I did something that required to use that small sector. Does anyone know how the entire stick of ram went from 100% functional to 100% dead all of a sudden? I ran tests on the machine the day I built it to make sure everything was good and everything checked out.