@contrex,
Death is a human concept, that does not exist inside of the cyber connected, being called simply the WEB.
Saying that a thread, that continues is dead is just not logical, perhaps science can show that it was really in a sort of hibernation, or even suspended animation, just waiting for a host to attach to? Seriously, if the web is never powered down, these thoughts could theoretically be almost timeless.
Now as for windows shutting itself down, it is highly engineered not to ever let this happen, except by direct command.