On top of other suggestions, really verify you followed proper procedure for re-application of cpu paste. You don't need too muc as thet will hinder proper operation its use. Next, the HSF arrangement must be proper as well, excluding any OC'ing attempts. If you OC, then you need to get arated fan(HSF) that better handles the operation. Also, verify *ALL* fans are working. Many times, because its unknown the PSU fan has quit ot siezed. Those having dual operation may work longer until it finally quits all together. Understand, to check all fans. Clean out the frt. panel area of any dust bunnies as well, overlooked often enough. Next, offhand, it seems your temps aren't alarming, but it makes sense to check status during various stages of operation. Als, you may overcomed the cooling ascpets of the PC and more is needed, so look into other cooling methiods. Not to exclude what maybe already pressnt but any othert fan mounting locations, some acses provides. best opweration of PC is good "airflow", thus it comes IN from front and exits via the rear. So fan(s) in frt, suck in and rear, suck out. If you have different operation, check to see what works best.
I've been having some trouble with my family's computer. It will shut down unexpectedly, right in the middle of something; click, blank screen, powers down. When you turn it back on it will beep(I'm guessing the CPU trying to tell me something), and then a screen will show saying: "CPU was shutdown due to a thermal event (overheating)" Then you can choose whether to start up normally or enter setup. Sometimes though, it will not turn on at all, I have to unplug the power plug than put it back in, then It will start up like normal.
This problem started a while ago, first time it happened I thought there was a blackout but the lights in the room where still on, so I rebooted then went on using the computer. I thought it was a one time event but it kept happening more and more frequent, than it got unbearable. I read some forums online and thought it might be a problem with the CPU Heat sink, so I decided to re-apply my CPU thermal paste, but it kept happening. I tried to install a Corsair A70 CPU cooler, but it wouldn't fit, but in trying to install a new Heat-sink I reapplied the Thermal paste again. It happened less frequently but it is still happening.
What should I do? Try and get a new Heat-sink that fits? Just leave it up to the experts and have it serviced? What exactly is going on? Please help.