Installed Win7 on SSD perfectly, plugged in HDD, now SSD undetected

I posted the below message in response to my own post in the New Build thread, but feel it might be more appropriate for here.

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Alright, so I have a problem with the rig I bought, posted above and I'll copy at the end of this message. Its the exact same build as my original post, except added a hyper 212. Everything booted up and ran right away, I _left out the HDD_ as someone suggested and only left my SSD drive plugged in. I used SATA6G_0 for the SSD and intended on plugging the HDD into SATA6G_1

Windows recognized my SSD in absence of my HDD immediately, so I thought great, and installed everything. I cannot remember if I partitioned the drive or not during installation, not sure if that might be the problem. However, it installed perfectly fine, I've been using it the past day or two, installing a few games and whatnot. This morning, I decided to plug in my HDD as well, to start saving more storage to the 1TB HDD rather than the 120G SSD. However, the moment I plugged the HDD into SATA6G_1 and booted up, the bios no longer recognizes my SSD.

Baffled, I fiddled with a few settings but couldn't figure out how to recognize my SSD. So, I installed windows 7 again on my HDD and have come here, looking for some help. I cannot see the SSD in disk management of windows 7 either, but it might be recognized in Device Manager, not entirely sure.

Case = $190 Corsair Obsidian Series 650D
http://www.newegg.com/Product/Prod [...] 6811139006

SSD = $220 OCZ Vertex 3 120G - Is SSD hard to configure or use? Some feedback on newegg said there are sometimes firmware problems with this drive?
http://www.newegg.com/Product/Prod [...] 6820227706


GPU = $335 EVGA GeForce GTX 570 HD DoubleShot 1280MB
http://www.newegg.com/Product/Prod [...] 6814130684

CPU = $220 Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) - Went with the i5 instead of the i7 to save $100 as it supposedly works JUST as well for gaming.
http://www.newegg.com/Product/Prod [...] 6819115072

Mobo = $133 ASUS P8Z68-V LE LGA 1155 - Not an incredibly expensive MOBO but it seems to have everything I'll need for this build.
http://www.newegg.com/Product/Prod [...] 6813131773

DVD = $19 LITE-ON DVD Burner
http://www.newegg.com/Product/Prod [...] 6827106289

PSU = $85 CORSAIR Enthusiast Series 650W - Was told 650W would be fine for this build.
http://www.newegg.com/Product/Prod [...] 6817139020

Memory = $55 G.SKILL Ripjaws Series 8GB (2 x 4GB) DDR3 1600 (PC3 12800)
http://www.newegg.com/Product/Prod [...] 6820231314

Hard Drive = $90 Western Digital Caviar Black 1TB 7200 RPM 32MB Cache - Going to use this as storage, running my Windows on the SSD itself. Can still load stuff from the regular HD in the 'My Computer' section while running OS on SSD, right?
http://www.newegg.com/Product/Prod [...] 6822136284

OS = $92 Microsoft Windows 7 Home Premium SP1 64-bit
http://www.newegg.com/Product/Prod [...] 6832116986