Gigabyte GA-Z77X-UD4H Motherboard BUG Update
 

There is a major conflict / problem with Gigabyte's GA-Z77X-UD4H series motherboards and the LSI SAS3041E-R SAS/SATA RAID card. It goes something like this - when a videocard is installed in the PCI Express x16 or x8 slot, the LSI card installed to the PCI Express x4 slot won't be recognized by the system. There are only two workarounds that PCSTATS could find... We're posting this to save fellow users some troubleshooting this issue.

http://www.pcstats.com/articleview.cfm?articleID=2714