Cannot recognize any internal hard drives, hard drives good

Hi,
My macbook pro 13" (bought in august 09) recently stopped being able to recognize its internal drive. I've run it through all sorts of diagnostic software, but none has been able to recognize it at all.
I've tried swapping out the hard drive to one that is brand new, but it still cannot recognize it. Everything is physically connected as it should be, and I'm running out of ideas for what to try.
I do not have easy access to an apple store to bring it in. If it is the only option, I could try to get it to one. Does anybody have any suggestions? Does this seem like a hardware problem that would need to be repaired?
Thank you,
Jack

Hi Jack,
It sounds like you have done a good job of troubleshooting. At this point we know you have a hardware issue. Fortunately you are still under the MacBook's hardware warranty, so Apple should repair it without cost to you.
Apple's retail stores are not the only source for service. Two other options available to you are 1) [Apple authorized service providers|http://solutionprofessionals.apple.com/aasp> and 2) call Apple (800-275-2273 in the USA) and set up mail in service.

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ssh timeout 5
console timeout 0
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vpn-tunnel-protocol ikev1
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group-policy GroupPolicy_10.8.8.1 internal
group-policy GroupPolicy_10.8.8.1 attributes
vpn-tunnel-protocol ikev1 ikev2
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tunnel-group 10.8.8.1 type ipsec-l2l
tunnel-group 10.8.8.1 general-attributes
default-group-policy GroupPolicy_10.8.8.1
tunnel-group 10.8.8.1 ipsec-attributes
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