The first driver release to ditch 32-bit support either won't complete the install, is offered to GPUs that aren't supported, or requires reinstall with each Windows reboot. A fix is on the way.
Geforce 397.31 whql RSS
Nvidia's latest GeForce drivers appear to be having a frustrating side effect of causing a continuous PC reset loop when updating to v397.31. It's even offered on systems that can't install them.
Nvidia has released its GeForce 397.31 WHQL-certified driver, bringing optimizations for Frostpunk and BattleTech, a developer preview for its ray tracing technology, support for Vulkan 1.1, and more.