perchy,
When you say, "[blue]I've tried stoping everything[/blue]", what are you talking about?
The way you want to accomplish that is to use CTRL-ALT-DEL and end task on everything except explorer. Also, disable power management and your screen saver.
If the problem still occurs, there's something else running at startup that's causing your problem. The best workaround will be Dillinger99's suggestion and just run it from Safe Mode (hitting F8 at bootup).
[tab]
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"The secret to creativity is knowing how to hide your sources"
[tab]- A. Einstein