Internal hard disk drive not found

Yesterday i turned on my Alienware Aurora r4 and received the message "Internal hard disk drive not found, to fix this issue try reseating the drive. No bootable device found." Of course the first thing i did was reseat the drive. After that didnt work i ran the PSA which told me every thing was working fine. I then checked the Aptio setup utility and under Standard CMOS features where it says device information it clearly showed the drive. I even reseated it one more time and went back to check that it was showing the drive. It detects the drive but for some reason i keep getting that error message "Internal hard disk drive not found." I hope im just missing something or making an easily fixed idiot mistake. Please help