CPU overheating in seconds

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danielp357

Prominent
Sep 25, 2017
3
0
510
For the last few days, my CPU has been overheating to the point of shutting off within seconds. We're talking 77c to 90c by the time it boots.

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I am modestly desktop savvy at best, and I'm assuming it has to do with this Enermax water cooler dying on me. I don't know if that's the case, but I feel that can be safely assumed.

The inner sides get got enough to burn your fingers when probed immediately after a shutoff/ unplugging, and beforehand I'm monitoring the temps which are absurd. Funny thing, I still feel the cooler working.

So how do I even take this thing off? I bought this PC on Craigslist a couple years back, and the hardware is pretty unknown to me (for all I know, it could be one huge jimmyrigged desktop).

I have no qualms with replacing the cooler, but if I could hear some collective wisdom on how to even take the cooler off, and some theories on what's going on, would be very grateful. I'm pretty stumped.
 
Solution
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ok i see

ok is the 3 pin connector connected to the CPU fan header?

Do the fans spin on the water cooler and can you feel cool air coming through the radiator?

If so this is all good, it means the water is being cooled by the fan air intakes

First thing to do is unplug the wires from the water cooler that go to the fan headers on the mobo

Next there are screws holding the cpu cooler block on, use a screwdriver to remove these (anti clockwise, release each one evenly as you go - so not just one at a time)

Once the screws are removed, remove the block and check the thermal paste? whats the condition? is it hard? is it caked on?

If so youll need to remove this but were go over that

be very careful not to get thermal paste...
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SlashingBison

Reputable
Mar 8, 2017
29
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4,540
Ok water coolers dont really break unless the fan is no longer pumping or pulling air to the radiator so i doubt its this unless the intake fan is not working

Thermal paste could be an issue, have you checked this isnt crusted on?

Has there been any overclocking on the cpu?

The machine is having a thermal event shutdown to protect the CPU, idle temps should be anywhere between 20c - 45c for the cpu on boot and/or idle

report back
 
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danielp357

Prominent
Sep 25, 2017
3
0
510
Absolutely no overclocking on my end. I was thinking it could be the Thermal Paste, but I'm not sure how to even get into the CPU to replace it.

It's worked for over a year with no issue, and nothing was changed to cause any issues, so I really have no clue what I can do to bring temps back down. Not afraid to buy new parts, but no clue what my first action should be.
 
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SlashingBison

Reputable
Mar 8, 2017
29
0
4,540
Was the pc new or used? that level of heat is the CPU seriously overheating

Does the water cooler have an intake fan? is this running?

Some water coolers will have a CPU fan under the body (where it sits flush to the cpu) is there a fan cable and header coming from this block?

The first action is to remove the water cooler block from the cpu and check the thermal paste

The fact the cpu is overheating so much on the boot is worrying
 
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danielp357

Prominent
Sep 25, 2017
3
0
510
https://imgur.com/a/lnXgh

It was used.

That's the entire cooling unit, I'm sorry the picture is so poor quality. Everything is currently unplugged.

One 3 pin connector is coming from the CPU block. The other 2 are from the fans, which are both placed on the 4 pinned connector through a 2 in 1 cord.

Would you have any clue how I remove the block? That's my biggest issue, not sure how to remove it.
 
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S

SlashingBison

Reputable
Mar 8, 2017
29
0
4,540
ok i see

ok is the 3 pin connector connected to the CPU fan header?

Do the fans spin on the water cooler and can you feel cool air coming through the radiator?

If so this is all good, it means the water is being cooled by the fan air intakes

First thing to do is unplug the wires from the water cooler that go to the fan headers on the mobo

Next there are screws holding the cpu cooler block on, use a screwdriver to remove these (anti clockwise, release each one evenly as you go - so not just one at a time)

Once the screws are removed, remove the block and check the thermal paste? whats the condition? is it hard? is it caked on?

If so youll need to remove this but were go over that

be very careful not to get thermal paste on the mobo as this can short components

If you are unsure on how to take the cooler block off, youtube search your cooler and im sure there will be a video
 
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