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#111
What is the SSD model? The benchmark results are not promising, you should be getting around 500 read/write sequential (really depends on SSD model but those write speeds are not acceptable). By the way you are using a driver called LSI-SAS 3.
Did you enable msahci driver already? If not AHCI : Enable in Windows 7 / Vista. It is enough to just enable msahci.
After that can you try something? Shut down PC, open front, get a flash light and see if you can see sata data and power connections inside the top empty space as you call it. Look at the HDD's (that you removed) back side to see what I mean. Or the picture below.
If you can see it inside the SATA-1 bay, remove your SSD and try to insert into there. You may have hard time inserting your hand in though. If you succeed, you may have to change BIOS boot order. Report back.