Hi all please excuse me if this has already been posted and replied to: The last two builds I have used Asus motherboards, on my last machine I could not use a SATA drive as a boot drive, and ended up using ATA. This March I made move over too Asus Crosshair, thinking this would solve the problems. It’s now Oct some 6 months later, I am still having problems and constant niggles. I have to say I am a very experienced engineer and builder but there is a level beyond what I know at the moment, thus this post. Let me start with the first problem, I should not have to reinstall every month or two as the system comes to a major slow down, In this new machine Apart from a few hard drives Every single component has been replaced even the case not that it would make a problem other than cooling. So I am running an AMD2 dual core 5000, I haven’t even over clocked it yet as I cannot get it running sharp. I have 4g of OCZ High end ram with heat coolers in Matched Pairs on dual channel, Not that my os will Run 4g, been reading up on that one Hmm. An Asus EN7900GS graphics and nearly 2T of storage. Despite I spend my life building computers for people only my machine will not work sharp, The New Build with ASUS Crosshair simply would not run Win XP pro sharp at all, So I invested in Vista Ultimate, Got a brand new SATA2 250g to run the new OS, It would not run what so ever I would not even install, Why I don’t know, All I know is I had the same problem on the last ASUS motherboard, I have never in the hundreds of machines I have built ever had this problem. As it stands at the moment, My Vista OS will not boot at all without the DVD Install disc in the DVD writer drive again Any Idea’s? I keep doing Google searches for any advice and cannot find specific answers to my individual problem. Next Stage, I set up a Raid 0 configuration on two 500g SATA2 drives all worked well till yesterday morning till it flagged up ERROR on Raid! I was like please no I have vast amounts of Data and on a raid if it goes down its gone. So impressed with the speed of this Raid, I decided to go for a Raid Boot for Vista, and ordered Two Matched SATA2 specifically termed for Raid, These arrive all being well tomorrow. I figured out how to set them up to boot in the Nvida Bios, I am praying this time The Crosshair will let me Install Vista Ultimate 32bit and Run. The basic Question is does anyone have any answers or suggestions WHY ASUS motherboard will not work with SATA Drives being SATA1 or SATA2 Hard Drives? And why when I do install the OS do I have to keep the Install DVD in the DVD writer? It also flags up that I have a previous Install and that Drive isn’t even in the computer anymore, Also I want to remove my IDE ATA drive That has My OS on, But I need to run my current Version to set up and format the New drives tomorrow if they arrive, I know this is a long post I would really appreciate any help or Advice. Cheers Andy ALA (Kneichion)