Hey All.
Ok, I am having the same problem, i have this MoBo and the 320gb SATA2 Seagate baracuda... This is what is going on, I have had Xp running and everything, but now when i load up it says System files are missing or corrupt, and when i try to repair it says no HDD is found, I made a driver disk from my MoBo CD.
Any Ideas of what is going on guys?
OK, I will assume the following since you didn't say:
Setup your SATA with the AHCI driver as described in my first append in this thread with exception you used the drivers on the ASUS CD.
You are not overclocking the system.
Couple of ideas come to me:
When you loaded the driver from the floppy did you select the correct driver by scrolling off the screen bottom to get to the AHCI for the ICH7R south bridge 32 bit version? There are a lot of different drivers on the floppy (ICH8R/7MDH/7M/7R/6R/6M) at the point you make the selection and it is not obvious that there are additional selections off-screen needed for this MoBo.
Highly recommend you get the up-to-date drivers and you will need a utility as well. The driver is named: IATA61.exe with a release date of Aug 1, 2006. The utility on the same page, just scroll down, is called F6FLPY32.zip, also with the same release date.
If you are using an old driver, that could easily cause your problem. If you loaded the wrong driver, you would be more likely to be unable to boot. This is a common problem with a number of users though so should be verified.
If above doesn't work, make another append and we can look at other possibilities.
Good Luck,
Paul