A few months ago I thought I got a great deal on a Dell Precision T5400 with dual quad 2.5GHz processor and 32 MB of RAM upgradable to over 100MB. It also came with 2 750 GB hard drives but before I figured out that the second drive was just a data recorder set up in a RAID formation in order to safely keep sensitive data safer by duplicating it on a second drive. Well, the second hard drive went out and I had to re- install Windows on the first drive and I thought everything would be allright but then the first drive went out also. I have 3 choices in the bios to change this setup. 1.) RAID Auto Detect / AHCI 2.)RAID Autodetect / ATA or 3.) RAID On Obviously I want the RAID off but it looks like I have to reformat my hard drives to make that happen and I don't know how. Can someone please help me fix my computer back to normal. With this system I ought to have some serious power put together right. I already have an 80gb new solid state drive but I don't want to mess things up before I put my operating system on the solid state for quick start ups and then add a couple of large hard drives for my large data. Also upgrading the video card. Can someone help me straighten this mess out because I am afraid I may need a certain format to keep this from happening again and I am in uncharted waters.