I've been using this cooling system for... well about two years now, and have never had any issues...until today. I was running the guild wars 2 beta test, had been doing so for a few hours, and all of a sudden my machine shut itself down. I rebooted, and again it shut down right away. I assumed it was over-heating so I left it alone for a while and started it up, went into the bios and looked up the CPU temp. From start up, it went from 35c quickly climbing over 72c, while simply idling in the bios... I cant even load windows without it over-heating and crashing instantly, any ideas?
Nothing on my system is overclocked at the moment, I was running my CPU at 3.9Ghz for a long time, but I put it back to stock a while ago, when it was overclocked it ran no problem, now its idling at 72c while in the bios lol... just randomly started last night.
Is the radiator getting warm at all, especially right where the hoses go into the rad? If it is not getting warm, that may be a sign that the pump is not functioning. Check your power to your pump and make sure that you are getting power and see if you can hear the pump running.