Thanks for your reply. I updated the bios to version F10, it was previously using F3. So thats a big jump...
Ok, I'll look for the UEFI option and try that. As for hardware, I use a core I5 (not sure of exact version, I'm at work right now), with windows 7 running from a 256 gb kingston SSD, then an additional 2tb 7200 rpm drive for files, projects etc. It's all housed in an Antec quiet case, I believe the model is P183. I use the computer for music and audio work.
As for the ram, I'm not sure I'll have to try it when I get home (I made the original post last night just before I crashed).