Check your ram. You could have faulty ram that is or has corrupted your page file, and every time you boot, it is giving you that message. This is the last thing I can think of at the moment. If something else comes to mind I will be sure to pass it along.
The best way to check your ram is to take it to a local comp dealer, not a retail outlet, unless its best buy, they seem to do a nice job,
and have them test it.
It shouldn't cost you next to nothing to have your ram tested. Most places do it for free as a service.

Just an idea.
BB