Hello, I'm running a GA-X58A-UD3R 1366 mobo with a 3.2 ghz i7 960. I recently bought 12 gb of 3x4 Gskill ddr3 1333 ram and installed it in my computer. The computer wouldn't recognize the ram, so I flashed my bios and it recognized the new ram just fine, problem is now the computer says missing operating system. I went into the bios and set the sata to RAID and went into the RAID config and recreated my raid 0 which is two 30gb ssds (kingston). This has not fixed my problem and it still says missing operating system even after fresh install.