First thing to do : check memory with a memtest boot CD :
Download the ISO there (above), burn it, boot on it and let it do all the tests (a few hours).
If it succeeds, your memory is OK.
We'll see next after that.
Memory tests OK. Hard drive OK. Must leave this to a professional care. I will report here at the end.
Maybe bad board or pros?!
There is a new BIOS 3822, try upgrading to it and giving it a go again.
Are you using disks in AHCI mode or IDE?
It was bad DP55KG motherboards from intel, two boards tested. Now running an ASUS board and no problem. Thanks to boys at the shop.