Hooly SH#$!!! My brand new Antec 550W PSU just blew up!!! Scarred the piss out of me! I just installed the Nvidia Driver 43.00 and needed to restart, well I accidently hit the shutdown icon instead. No problem, an anoyance at worst, so after the system shut down I hit the power button on the front of my PC and I hear (actually the whole house heard it) this very loud crackling sound like a sparkler firework, at the same time through the air vent that houses 2 front USB ports I see blue lights flickering and then it shutdown. So I quickly pull the power cord out of the back and flip the power switch on the PSU, and then I smell it, the smell of burnt electronics. I am thinking this is not good, not good at all! So I disconnect everything open up the case, disconnect the mobo power connector first, just in case there is still some life left in the PSU, unplug all the power connectors and remove the PSU. No way I am trying that one again! So I grab my old PSU and install it. Praying that my mobo, cpu, ect is not fried. But as you can see it wasn't, THANK GOD!!! But wow, that was a scare!