Motherboard: Gigabyte GA-MA785GPMT-UD2H CPU: AMD Phenom II X2 555 RAM: Corsair DDR3 4GB @ 669MHz Video: ATI Radeon HD 5750 PSU: OZC Mod X-stream Pro 500W Hard drives: Samsung HD103SJ & Western Digital WD1600JD DVD-rom: Pioneer DVR-212D OS: Win7, but we're dealing with the BIOS I'm about to wipe my current OS install. Currently the BIOS is set for SATA to be IDE (all drives are SATA). I'd like to have the BIOS set to AHCI for the drives, but I'm running into some trouble. Let me state that when SATA is set to IDE in the BIOS everything works just fine. It's when changing it from IDE that things begin to act up. Current BIOS settings: * On-chip SATA controller is set to on. * On-Chip SATA type is set to Native IDE. * This automatically sets the On-chip SATA Port4/5 type to IDE and cannot be changed. When set this way everything boots fine and I see this on boot. So since I'm wanting AHCI for my drives, here's what I've tried. I'll group the different variations: Variation 1 * Set On-chip SATA type to "AHCI" * Set On-chip Sata port4/5 type to "IDE" No boot. An ACHI scan screen appears and finds all 3 drives, but once Windows boots it BSOD's because of being set to AHCI and not IDE and the SATA drivers not being loaded. Variation 2 * Set On-chip SATA type to "AHCI" * Set On-chip Sata port4/5 type to "As SATA type" No boot. An ACHI scan screen appears and finds all 3 drives, but once Windows boots it BSOD's because of being set to AHCI and not IDE and the SATA drivers not being loaded. Variation 3 I could set On-chip SATA to "RAID", but since this isn't an array of course that won't work. So with that said, am I missing a combination somewhere? Maybe another setting? I thought the settings should have been "AHCI" and then "As SATA type", but like I said that gives me a BSOD. Oh, when the BIOS SATA settings are set to anything other than IDE the first boot screen displays the exact same info as in the pic above, minus the IDE Channel 2/3 section. To be more specific on which ports my drives are plugged into: * Boot HD (Samsung) is plugged into SATA port 2_0 * 2nd HD (WD) is in SATA port 2_1 * DVD-rom is in SATA port 2_2. My first thought is why are the drives appearing on the 2nd/3rd channel and not 0/1 when they're plugged into ports 0/1/2? Here's a pic of what happens when On-chip SATA type is set to "AHCI". You'll see that all three drives are found. The Win7 disc in the DVD drive, but it will not boot to it. I get an almost instantaneous BSOD with the code that points to the SATA driver (0x00000007b). Here's what happens when On-chip SATA is set to Native IDE and the DVD-rom is moved to SATA port 2_4. When On-chip SATA is changed to AHCI and ports 4/5 are changed to IDE, IDE Channel 2/3 isn't on the initial boot screen and the AHCI scan finds only the 2 HDDs. The Win7 DVD can then be booted from and the Win7 install sees all HDDs. You'd think things would be OK and I wouldn't be posting here. However, it took about 20 minutes to get from "Press any key to boot from DVD" to where I could click something to start the install of Win7. That seems like it's a little much, considering how many times I've installed Win7 at work and it takes just a few minutes to get to that point. I'm confused as to why selecting AHCI for all drives (DVD-rom included) won't let me boot from a DVD. The length of time mentioned in the paragraph directly above this one also concerns me. Any help is greatly appreciated. I'll be away from my computer for most of the day tomorrow (central US time zone), but I'll try my best to get back with the results of suggestions as soon as I can. Hope I've included everything I need to. Just a little confused and frustrated.