Wd sata HD not detecting in BIOS chaintech K8M800

Question

both wd sata 1 hd(WD800 and WD1600) does not detect in the BIOS.It worked 1 day earlier,but I decided to move the drive to another drive for airflow,when I restarted the machine,it did not detect the HD.Earlier I used a program called system mechanic that stated that one of my sata hd was overheating(WD800).I've tried everything in BIOS and changed jumper settings nothing.can't find chaintech website to look for BIOS update!!!!Please help