depends on a few things. Does it happen in or out of Poser?

These can be all sorts of things, hardware or software, or even both.  Also depends on the Operating system.

I had a problem like this, and it turned out to be dust buildup on the processor and internals. A few good puffs of air made things better. Cheap, and worth a shot.

Another thing (depending on the OS), there are ways to boot and create (or capture) a log file of what loaded (or didn't) as you come up to operational. Doesn't mean much unless you're a techie, but if you even contact tech support, it will put you a few pages ahead on the troubleshooting guide.

Just keep an eye on when it happens, and what the last successful thing you did was. If it happens a few minutes afterwards of booting up, it could be heat-related. Hope this helps.

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)