New
#11
SD
The only bus i know is in device manager sda standard compliant SD host adapter?
I had this problem on my new Amd phenom machine, but with a sata dvdcdrw, Boot up it was there then for no reason it just said device ofline or was just not there after 5 to 10 mins, ?{or blue screaned} win7 ultimate never did sort it out just removed the sata cable and use my external drive, never had any probs with that. i know this dose not help you but it sounds like same type of problem??
All the best Dave