At what point of the installation did you unplug the PSU ? If it was near the end you could always try and repair the instalation. If not
then I sugest you format the drive and start from scratch ( reselecting boot device priority in BIOS ).
Have you checked the temps in BIOS and see how they work out ? do they increase dramaticaly over time or are they stable ?
-Ahaxz
i7 3930K @ 4.7 GHz + EK HF supreme
Asus Rampage IV Extreme + EK WB's
32 GB Corsair Vengeance DDR 3, 1866
ATI / AMD 5870's in Crossfire + EK WB's
2 x Intel 510 Series SSD's ( RAID 0 )
2 x WD Caviar Black ( RAID 0 )
Asus Xonar Essence STX