I've got a problem with the copy of Half Life I downloaded from Steam yesterday using my original CD key. When the next part of the We've Got Hostiles level loads (about halfway up the elevator shaft for surface access) after you've cleared the room of soldiers, the elevator sticks halfway up, gradually draining HEV power and health until you die.
This is really pi**ing me off, please tell me there's a way around it. I have to use the downloaded version as my CD is too old to be recognised.