Everynow and then randomly my pc freezes and essentially shuts down, whatever screen I am on it is still there but when I push the power button it reboots. I checked the temp, and it is running around 55, 1 out of 10 I will get the blue screen but it goes away before I can read anything? What info do I need to provide? Intel D946GZIS mobo 2gb Kingston Ram Pentium D processor 3.0*2 500g wd hdd. Also I get no error and it boots back up as if I shut it down.