Random Freezes

[blackhole82]

I've been getting random freezes when trying to play Amnesia. Somehow I've managed to finally make it to the storage area, but can't seem to progress further. When the freeze(s) occur the screen goes black and then I will get the message that the display driver has stopped responding. I'm running Windows 7 64bit with an AMD HD 6870 video card. I've tried all the fixes I could find such as running as administrator, compatibility mode for XP SP 3, disabling steam overlay, write access to the game directory, verify steam game cache, reiinstall amnesia, reinstall video card drivers, etc. This is the only game that I've ever gotten this error for. In my HPL.log it says:

-------- Loading complete ---------
WARNING: Could not find player start node ''
ERROR: StartPos '' does not exist!
-------- END LOAD ---------
WARNING: Entity 'explosive_container' with type 5 and subtype -1 does not exist!

Any help is appreciated. Thanks.