I recently got a GT 730 () to support three monitors. I've been having problems with my computer hanging and monitors temporarily blacking out (particularly the one connected to the VGA port), particularly when I'm doing something that increases the load on the graphics card, like playing a YouTube video. Now, I just got a BSOD. When I look in Administrative Events in Event Viewer, I see repeated warnings that "Display driver nvlddmkm stopped responding and has successfully recovered".
 
I've done a little research and made sure I'm in high-performance power mode and turned off Link State Power Management.
 
I have a 500W power supply, so I doubt that it's a PSU problem.
 
I have the latest driver installed.
 
Any ideas?