My very reliable home computer has just developed a habit of turning itself off while in sleep mode. It used to sleep with no problems, and I much prefer this to shutting down because it fires up right away. Anyone got any ideas what might be causing this? The only thing I have changed recently was to add the SSD as my primary drive and use the old HD as secondary storage. I guess I'm a bit worried that this shutting down is a sign that this computer's time might be done. While not necessarily a bad thing, in that I get to upgrade, but it's just such a PITA to get everything back the way I want it. Thoughts?