Hi guys, i need some help from you!

I got a rig with 6 msi armor 570 8gb hynix memory, on a asus prime z270, i tried to use strapt 1500, and overclock 1230/2150 and everything its ok for 3 mins, then i got a blue screen, i tried to lower the overclock to 1100/1900 but same results, any suggestion?

This is my bios, i will try 1 gpu at time mining cause it driving me insane

https://mega.nz/#!y8sxEYIT!8cuqTqIaft2OGXxTSmfByKq_fyw6mN-ki-BxJa47w-M