BsoD on brand new machine.

I just built this machine on Monday and it has Blue screened twice since then with "Modification of system code or a critical data structure was detected."
I'm running some Windows updates ( I forgot to run them after I built it:-o) So I'm hoping that these 100+ may solve this issue, but if they don't, does anyone have any other course of action I could take?

 

Sounds like it may be a bad drive, cable or motherboard, maybe PSU. I'd run hardware tests first, no point in looking into software issues until all hardware is tested and proven good. Lists of hardware diags and methods here: http://carrona.org/diag.html

EDIT: check for BIOS updates, also reset the BIOS and then set everything manually, check voltages/temps are all withinn spec from there too.

Which OS and BIOS/UEFI (full hardware details would be useful)?