I've just upgraded to a new motherboard. I went from an Asus M2NPV-VM to an Asus M3N78-EH with Geforece 8200 and nForce 720a or nForce 730a chipset. It has one IDE port supporting two IDE devices and six SATA ports supporting six SATA devices. Unfortunately the SATA devices don't work. When I tried to boot my system again it couldn't find the harddisk. It did detect it in some way at the boot(which I discovered after removing the splash and quiet boot options) but something times out, it retries after 5 seconds and times out again until it has repeated too often. At a LiveCD I do get booted in the DE, at my base install I get a BusyBox and the message that the /dev/{long UUID} can't be found.The UUID is from the SAYA harddisk. The sata harddisk is an Maxtor Diamondmax 17 SATA II with 160GB storage. I'm now attaching two tarballs, the first contains some error logs from the LiveCD, the second tarball contains some log files from the new install I made on an IDE harddisk. During the first logs I did have the SATA harddisk connected, during the second not.
I'm going to attach the output of dmidecode as soon as possible.
It gets a 'qc timeout' and tells me it can't IDENTIFY when it's '*Loading Hardware Drivers'. I hope this little bit of information can help you.