Thanks for the reply Alex. After clearing CMOS then updating to the latest version of the BIOS the issue still isn't fixed. Actually after clearing CMOS and updating BIOS the usable memory has gone down to 7.96 GB. I also contacted Asrock tech support but they were not helpful. They suggested I reinstall the OS. Which I know isn't the problem because I've seen the problem on Windows 8 and Windows 7. I'm currently running Windows 7 Ultimate.