Hard drive wont boot but still works as slave in a different pc

[eddie200112]

I have a Gigabyte 790fxt-ud5p Motherboard. with amd 955 BE phenom II and 4Gb Gskill 1600ddr3 memory. I have 5 WD 1TB caviar black drives installed, one with windows and 5 for storage. The other day i turned the pc off to install a 6th hard drive, same kind. turned it on and the pc would go thru bios but when started to load windows got a blue screen and it rebooted. on its second attempt it stopped at the point before it would load vista and just stayed there, i could here the windows drive working as if it was trying to load but would never go anywhere. i made sure the drive was selected under bio as boot drive and nothing changed. i unplugged all the other drives and nothing changed. i then moved the drive over to my HTPC and the drive showed up no problem in there. so i backed up the data while it was in there, but still dont know y it all of a sudden wouldnt boot in the original pc. ANY IDEAS THANKS

 

[evongugg]

Clear the bios first.
Try building out side the case with power, beeper, mobo and cpu. Listen for beeps.
Keep adding hardware and listening for beeps.

"New build won't boot" checklist

http://www.tomshardware.com/forum/261145-31-build-post-checklist

 

[evongugg]

Tell us about your power supply (Wattage, make and model) and test it with a power supply tester.

 

[eddie200112]

Thanks for the responses but i just backed up the data on a diff pc and reinstalled windows. now its working normal again