Sigh. My 20 month old early 2009 Mac Mini w/ 2.26 Core 2 Duo, 4GB RAM and 320GB hard drive seems to be having a problem with graphics. The best way to describe it is to show you a video...watch carefully about 22 secs in. http://www.youtube.com/watch?v=r9Bmc14c6gg After the display gets scrambled, the Mac locks up and I'm forced to press and hold the power button to shut down. I can power back on normally and then about 2 mins later, the same thing happens. So....is my nvidia chip dying? It apparently has nothing to do with the system. I've booted from another Mac OS system as well as my Win7 system and it happens on all. I also do not suspect overheating as a cause because my fan RPM and CPU temps are both normal. The Mac is also used in a clean environment. There was very little dust contamination and I already blew it out with a duster. I am currently using a mini DVI to HDMI adapter (from Monoprice) for the video output. I have not been able to try the mini Display Port because I have misplaced my adapter for that. I suspect trying the second video out won't make a difference anyway since the nvidia chip controls both. Any ideas? I would hate to have to seek out a new logic board. I'm guessing I may as well get a new Mac but, darn, those 2010 Minis starting at $700 makes that too difficult right now.