Try setting your ram to the default speeds and timings detected by your BIOS but keep/change
the voltage to 2.2v because you ram chip(s) is rated up till that voltage and Kingston will fully warranty your ram up until those voltages regardless the speeds your running your ram at. I think the BIOS detects the ram as DDR2-800 5-5-5-15 plus you need to change the ram voltage to 2.2v.
Download and burn Memetest86+: Memtest86+ - Advanced Memory Diagnostic Tool
: Make sure nothing else is overclocked in your BIOS, e.g: CPU, FSB or PCIe and that all the voltages are at default besides the ram running at 2.2v before running Memetest86+.
Run Memtest86+ with the default speeds and timings detected by your BIOS with 2.2v as mentioned above for at least 2 passes, 3 passes is recommended in your case.
If all goes well and you get 3 passes without errors at default speeds and timings with 2.2v then your ram is not faulty and we can proceed to either overclocking you ram to DDR2-1066 speeds or setting the multiplier to 5.33x if your BIOS has that option for DDR2-1066 speeds. However, if you gets errors within those 3 passes then your ram is faulty and you need to exchange/return or RMA your memory depending what option you still have left.
Let us know what the results of Memtest86+ within 3 passes. And we can hep proceed to getting your memory at DDR2-1066 speeds or at least close to those speeds. Good Luck!