Asus A8V board won't see my Sata drive

[yadda]

I have added an older SATA 160 GB drive to my PC to replace my IDE 80 GB drive but for the life of me it won't see the SATA drive(I also have an identical drive and it won't see that one also....)

Ideas???

 

[yadda]

OK..The SATA drive is recognized now but now when I boot into a Windows 2008R2 disk It sees the SATA drive but I get an error after I format it and try to use it.

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Windows cannot be installed to this disk. The computer's hardware may not support booting to this disk. Ensure that the disk's controller is enabled in the computer's BIOS menu.
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There is not RAID active on this system. When running setup at boot the motherboard doesn't see this drive.

Ideas???

 

[RebateMonger]

Do you have more than one disk connected to the computer?

http://support.microsoft.com/kb/933925

"This computer's hardware may not support booting to this disk. Ensure that the disk's controller is enabled in the computer's BIOS menu."

This problem occurs if the following conditions are true:
The computer contains multiple RAW hard disks.
The hard disks are all the same size."

 

[yadda]

Nope just the SATA drive. There is a IDE drive with Win7 on it but it is NOT plugged in.