I feel ashamed to have to ask this question but anyway... Just got a Dell Dimension 9200 (XPS 410) that came with two SATA II HDDs (160GB & 320GB). The factory install was Vista Home Basic but the previous owner upgraded to Vista Home Premium and that's how I received it. I wiped the drive to do a clean install on XP Pro w/ SP2. Once the install was complete all was fine until you restart. Upon restarted I got the dreaded "No boot device available" error. Having this issue in the past I had a CD with "fixntldr" on it which worked like a charm. I used it for this current issue and it booted right up no prob. I copied the boot.ini / ntldr / ntdetect.com files to the C: as recommended and restarted to test it. No luck, I still got the boot error. After repeated trys at the fixntldr fix followed by multiple OS reinstalls, I decided to do a clean install of Vista Ultimate thinking that maybe my new machine just didn't like my copy of XP Pro w/ SP2. After Vista was completely installed, I installed the updates and other typical crap and rebooted and VOILA the boot error strikes again! I checked all my cables, ran diagnostics on my drives and checked my bios and this one has me boggled . I'm sure it's an easy fix that I'm overlooking. Thanks in advance for the help! Specs: Dell Dimension 9200 (XPS 410) Intel Quad 2 Core Q6600 (2.4Ghz, 1066FSB, 8mb L2) 4GB DDR2 667Mhz (3GB recognized of course) Seagate 160GB SATA II 7200RPM (ST3160815AS) Maxtor 320GB SATA II 7200RPM (STM3320620AS) 256MB Nvidia Geforce 7600GT PCIe x16 Creative Audigy SE 16x DVD 20x DVD+/-RW DL (lightscribe)