Thanks for reply.
1. I'm running XMP profile, it shows 2133MHz. If it gets loaded to OS, XP runs fine, never crashes (I live it on for many hours), I will double check this with MEMTest. I've tried few other RAM, including old 1600MHz - same result.
2. I already updated BIOS to the latest...
Just bought this MB. Using i7-3770K, 2x4GB 2133MHz Mushkin RAM. Not overclocked.
Trying to test it with old 80GB SATA HDD and new Samsung 840 Pro 128GB SSD. WinXP installed on HDD, SSD is empty. Samsung detected most times, but not always. Old HDD's (tried couple different ones) most times not...