Update.
After taking to the vendor for testing they found a faulty memory stick with one set. The other set they didn't report a problem, but they did update the BIOS, so guess it was that. Strange though because it said it did support one of the CPUs i tried.
Anyway, one computer built and tested, minus the hard drive. That will go to the wife, just need her to go to work for a few hours so i don't stop her from working or playing her farming game at home.
Having compared the stats of daughter's computer, its not really worth an upgrade. I forgot her CPU was a damn good one when bought, thought it was worse than that. So decided will use the other parts to upgrade the mother-in-law's comp, which is terribly slow and painful to use.
Thanks to everyone for their input!