The fun of new hardware...
Finally got most of the bits and pieces needed to assemble my computer, so I set out to plug in the new HDD, the XFX card and thats when the fun started. My old Windows Vista would crash with a bsod when shutting down causing the darn thing to restart autimatically and politely tell me that Windows experienced a problem when starting up again (completely "uninvited"). Ah well I thought, maybe there was an issue with the gfx card and the power consumption? It looked like it cut power prematurely somehow, before finishing the shutdown. Taking out my trusty old Radeon 2400 card and plugging that in instead, I set about installing Windows 7. Yep. 5 failed installation attempts later, it turned out that it wasn't the gfx card. It was the damn hdd
Finally got the XFX card in, removed the HDD, installed Windows 7 and things seems to be running. I tentatively tried (the day after) to plug the HDD back in (in a different SATA3 connection), though not as my primary/windows drive and the system appears stable. Either the motherboard has a single bad SATA3 connection or a good nights sleep did wonder for it. Go figure. I'll try installing Windows on it next time I need to reinstall. Of course, I have to take the thing apart again when the last bit arrives, as my cpu water block needs the backplate on the other side of the motherboard. Giving the XFX card a few weeks of work first before tearing off the stock cooling, just in case.
Had to remove the lower fan, between the bottom HDD's and power supply too, as the power supply is too long for the Antec case. Who dares wins.