Question Asus z170 Q code b2 and literally no dimms or slots working

Mar 8, 2019
2
0
10
Heard a weird noise from my cooler, so i naturally turned the system off. Upon reboot i got a Q code which was b2. Have tried for an hour to get it working again by swapping the dimms around and running single channel in all slots without results.
Spec is i7 6700k, 4x8gb ddr4 1800mhz, gtx 1080ti, running 2 ssds, 2 hdds and 1 m.2. Cooler is a be quiet of some kind.