8GB XMS Memory kit for dual channel systems, 1600MHz, 9-9-9-24, 1.65V
Verify that memory is running at 1.65 volts ( cpu-z will give you this information amongst other utilities ) in the BIOS.
Try setting the Command Rate (CR) in the BIOS to 2T if it is currently set to 1T.
If system won't boot with 9-9-9-24 timings at 1.65 volts ( I don't recommend you set the memory voltage higher than this, probably won't make any difference in getting tighter timings to work ), then try for a compromise with 10-10-10-29 ( manually of course ) and see if it likes that...
Worst case you are stuck with 11-11-11-29 settings on your particular mobo, but that is not the end of the world.. at least you have 16 GB total ram now!
I doubt very much you can even notice the difference between 9 and 11 timings unless you are memory benchmarking..1% difference ( if that ) is hard to detect... but of course try for lowest possible timings... good luck!!