Turn off the automatic 'Lock the computer'?

[Mikohn]

I'm doing long simulations with 3dsmax's Fumefx and I have this most annoying
problem with Windows Vista automatically locking the computer after a while
and thus jamming the simulation process i'm doing! So I can't left my
computer doing the simulation overnight...

I've checked all the power options and others, but it still locks the
computer after a while. In the screen saver settings the option "On resume,
display logon screen" is checked and DISABLED! why?

Bit frustrated am I.

 

[Old Rookie]

Maybe tips in the link below will help?? It also shows registry mod to
disable screen lock.

http://www.vistax64.com/tutorials/120503-lock-computer-enable-disable.html

Steve