Macbook pro will not boot, gets stuck on great apple logo with spinning wheel.

I have a Macbook Pro A1287 13" Core2Duo Intel running Mavericks. This morning it would not boot and got stuck at the grey apple logo with the spinning wheel. I have tried:
1. Resetting PRAM
2. Resetting SMC
3. Starting in Safe Mode
4. Boting to recovery partition and verifiying and repairing both disc and permissions
Unfortunately none of these have worked.
I thought after reading other discussions that it may be the sign/start of hard drive failure and that the hard drive may be corrupt.
The strange thing is that I swapped the hard drive with another macbook pro that I use in work and it boots to the HD no problem, all my files and desktop are as expected.
So, I thought this must be a hardware issue, maybe something to do with the hard drive cable, the battery or worse the main board, but when I put my work macbook hard drive in my macbook it also boots. Other than swapping the machines, I'm not really sure what to do.
One thing to note is that I have noticed over the past few months that the clock will have re-set when booting up and that occasionally the machine will turn off with no warning and reboot.
I would have thought if it was a hard drive problem, the drive would not boot in any machine, and if it were a hardware problem then the machine would not boot with different drive in it.
Any ideas, would be appreciated.

Thanks Linc for the swift answer. From what I have read on this discussion board and from other sources the model of Macbook I have does not have a logic-board battery, but may have a soldered on capacitor.
Also, would this not cause the other drive I tried in the laptop to fail to boot also, as I said in my original post, the machine works ok with a boot drive from my work macbook pro. Just trying to eliminate all possible causes before taking it in somewhere to be looked at by a technician.

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