Installed new mb, now my pc won't detect my hard drives

drinktobones

Honorable
Dec 1, 2013
2
0
10,510
Wasn't sure which subforum this should go in, apologies if it's the wrong one!

Installed a new motherboard ( Intel desktop board DX38BT(B) ); my old RAM was incompatible, so I replaced that with a Patriot Viper 4GB DDR3 1600MHz.

Now whenever I try to boot up, I get this:

No bootable device -- insert boot disk and press any key

Which is odd, because if I actually unhook my hard drives, the message looks like this:

A bootable device has not been detected.
Please refer to the Product Guide at http://support.intel.com/support/motherboards/desktop/


(I checked out the support site, it wasn't much help)

My hard drives are as follows:

WD Caviar Black 500GB
WD Caviar SE 250GB
WD Caviar SE 250GB

My OS is Vista. I wasn't sure what information to provide, hope that's enough. I can certainly provide more if necessary.
 

drinktobones

Honorable
Dec 1, 2013
2
0
10,510


I neglected to mention that I did all this a few months ago, and when I couldn't get it to boot up, abandoned it out of frustration. As such, I'm a bit foggy on some of the details, including which drive is the vista drive.