Hi,
Having the same issue with 8.0.312.0 Pre-Release update 1462.
Motherboard is a ASUS Z87 Sabertooth.
All Windows Critical, Important and optional updates installed.
System freezes without a BSOD, but freezes keyboard and mouse inputs.
No indicators of compromise using multiple scanners, Malwarebytes, TDSKiller, ESET Rescue, etc.
Uninstalled ESET and system runs fine.
I am now scanning with Loki for IOC's.
I plan to upload a BSOD dump after the loki scan completes.
I will keep you posted.
Thanks to all for the help so far.