Mac Pro HDD bay failure

I have an early 2008 mac pro quad core 2.8, all was fine until i tried to install windows 7 on the drive in bay 3, I never got past formatting the drive, upon restart that drive did not mount and did not appear in disc utility, i had to remove place in to bay 4, erase and all was fine with the drive, except when i put it back in to bay 3 it will not mount and does not appear in disc utility as before, i have tried other working drives in the same bay with the same result, all drive work in bay 4 no problem, I have reset PRAM and tried SMC reset, well followed the intructions for SMC reset but no idea if it worked or not.
Any ideas?
Thanks all

Windows tends to do better for some in #1 or 2
run AHT Apple Hardware Test
more likely to be motherboard, or loose cable back in there if not the drive
remove your drives and just use Windows to format, initialize, even chkdsk for bad blocks
and, drive vendor's Windows or linux tool is best way to certify drive functioning, WD Lifeguard is what I use and even spotted cable issue as well as better job mapping out weak sectors, 

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