Antec 300 Case Intel i3 530 stock speed 4GB Corsair XMS PC3-12800 Gigabyte GA-H55M-UD2H Arctic Cooling Freezer 7 Pro Corsair CX400W PSU Samsung Spinpoint F3 320GB Samsung SH-D162D Windows 7 64-bit I have a rather annoying problem with this system. For a couple of weeks now it will randomly have a screen freeze with flashing pixels for a second or two and then just shutdown completely. It restarts with usual "Windows shutdown unexpectedly" screen. It currently doesn't have a GFX card in and is using the boards Intel HD Graphics but it did the same thing with an ATi 5770 and a Nvidia GTX460. Any ideas?