The CPU (Dual-core) is overheating and the computer shuts itself off. However, the fan is running at full speed.
I verified this both using a motherboard monitor and by running the machine with the case off.
It came sort of out of the blue and has me baffled. The only thing that has changed recently is a hard drive replacement, as well as an additional hard drive installed (for backup), however it ran fine for about two weeks after the replacement and for another after the additional hard drive was put in. Power was planned for well in advance, there's plenty to spare and there are plenty of fans, all of which are functioning.
One thought I had, was that the sensor was malfunctioning, I've checked temperature from both the BIOS and from a motherboard monitoring tool that came with the mobo. It says the CPU is running at 180 Fahrenheit (approximately) at a peak. The mobo is running at the same temperature as always.
Any other ideas or thoughts?
If it was the sensor, I have no clue what to do, or where it is.
Let's see . . . 180F is . . . let me see . . . 2 carry the 3 . . . uhmmm . . . 82C. Yes, that's warm, but not fatal. (Please report temps in Celsius - its the reference we all use, even here in the US.)
It would be extremely rare for a processor to shut down without really getting hot. So first we want to look elsewhere.
Are you using the stock cooler?
Did you tip the case? Maybe all four pins were never really IN, and a tip/bang jarred a corner of the cooler loose. Test by trying to "torque" the heatsink/fan assembly. Does it move at all? If so, remove the mobo and make certain all four push pins are fully thorugh the mobo and are forcing each of their split pins to grab the back of the mobo.
[Less desirable, you can press down a bit on the heatsink/fan while its running and see if cooler temps begin to prevail.]
If not using the stock cooler, did you remove the fan for cleaning and re-install it backwards?
Download RealTemp, CoreTemp, or CPUID Hardware Monitor for temperature tracking.
The problem is, I can't for the life of me get it back in!
I ended up undoing all of them and they all popped up. Now I can't get any of them back in.
When you turn each one, is the bottom (the part with the clip I'd guess you call it) supposed to turn with it, or is the top independent from the bottom? The bottom doesn't seem to be moving when I turn them.
I put it so the thin edge/notch is outwards like it says too, but they won't for the life of me go back in.
I've read that this system is a pain and have experienced it before (what I wouldn't give for some screws) I'm just wondering if there is a better way, rather than exerting so much force I break my damn mobo.
Let's look at one "pin", one corner of the heatsink.
The push button on the top side forces a (black) pin down. When it is fully down, it forces two (white) half-pins outward. These two half-pins have little "hooks" on them that grip the back of the mobo, and prevent the heat sink from being pulled out. To install, you need to get the white pins behind the mobo, then press the black pin down to force them apart.
So the trick now is to raise each black pin UP by rotating/pulling up on the round plate on top (I forget which way lol, its marked with arrows). That will allow the two white half-pins to come back together so you can insert them into the holes. You may have bent the half-pins, squeeze them together so they will fit into the holes in the mobo.
Once each black pin is raised, and each two half-pins will fit in the mobo holes, re-install the heatsink. Make sure you watch the back of the mobo as you insert each leg - that way you will know when the white pins are grabbing the mobo.