White smoke from exhaust now the car will not start. on 1994 BMW 540i

Purchased 1 week ago. noticed white smoke on start up. saw more smoke during stop and go traffic this morning. at lunch the car would not crank but tries to turn over. added gas just in case bc the hand was showing low but that did not solve this issue.

Asked by for the 1994 BMW 540i
sounds like a blown head gskt or a cracked head causing coolant to leak into the cylinders thus the white smoke