I have a K9N2 Diamond motherboard and BIOS v2.7. I recently bought an Intel SSD 520 Series and when I connect it, the BIOS does not recognise the HDD at all. When I try to install Windows 7, the HDD is shown at the list, but it says that I can not install Windows at the HDD.
I have tried to connect the HDD at SATA port 5 and 6 and set the RAID mode to ACHI and also at ports 1 and 2 and set the RAID mode to IDE. Nothing works.
I have two SATA drives connected at the moment with the AHCI configuration and they work fine. The main drive is a SATA VelociRaptor from WD and I bought the Intel SSD to replace it.
The difference is that both my current SATA drives are SATA 2, where the Intell SSD is SATA 3. The spec though say that it is backward compatible to SATA 2.
I've connected my 520 series SSD to Intel and Gigabyte motherboards that supported SATA2 and currently a Gigabyte motherboard that supports SATA3. All three motherboards were using Intel chipsets set to AHCI and there was never a problem with the SSD being detected by the BIOS.
In theory you should be able to connected the SSD to the same SATA port that the WD currently uses and it should work. If it's not, try a different SATA cable, maybe the one packed with the SSD if it came with one. If a different SATA cable doesn't work. I'm still thinking it's the nvidia chipset that's the problem. Maybe a new motherboard?
My existing cables work fine with either of my current HDDs. There are SATA 3 cables and neither of them works with the Intel SSD.
I like your idea, but I am not planning to upgrade the motherboard or CPU or RAM at this stage. If I can not make it work I will just return the SSD.