Computer shutting down after a few minutes

Moonbreaker · Mar 14, 2017

so i got a new case for my birthday and build in all the parts from the old computer. it started normally but after one or two minutes the computer suddenly shut down without any error warning or anything. my first suspicion was the cpu because i accidentaly sepperated the cooler from the chip and the thermalpaste layer is pretty bad at the moment. so i went into bios and looked at the cpu temperature and at around 66°C the computer shut down again. my new case got two more fans than my previous and a fan controll panel for all 4 fans and the one led. i disconnected the fan control from the motherboard and cut off the energy supply and booted the computer again. but the same thing. it shut down after two minutes. i connected everything to the motherboard the way it was before so im almost certain that it is not happening due to a false connecting. i didnt really think it was my psu that was my problem because the only difference between the two cases, was the two more fans and the controll panel but i couldnt connect my dvd drive because the sata cord was too short for it. to make sure it hadnt something to do with the new case i decided to put everything back into the old one but sadly the same thing happend... i cant look at any shut down logs because i dont get that far and even if i boot in save mode the computer shuts down and i ran out of ideas. i dont want to buy a new psu if i cant be sure that this is causing the problem.

my specs are:
Windows 10 64 bit
AMD FX 8***, dont know wich exact it is, but its eight core with around 3.6 ghz each, so probably FX 8320
GTX 980Ti
Arctic Freezer 13O CPU fan
Mastercase Maker 5 as the new case with 3x140mm Cooling master Fan + 1x 120mm bequiet pure wings 2
SmartSE 730 Watt PSU 87%
ASUS M5A97 R2.0 Motherboard
LG MODISC DVD drive
16 Gb DDR3 Ram
Seagate 2000Gb HDD

so please can you tell me if i just need a new psu or if my current one is fine and something else might have caused the problem.

have a nice day

Ralston18 · Mar 14, 2017

Very much seems to be overheating with respect to the CPU. Heat is not getting transferred away fast enough.

Did you reapply the thermal paste? Think not as I read your post.

You need to go in and redo the thermal paste. (And skip the bad language in your posts - not allowed!)

If you attempt other fixes without addressing the CPU's thermal paste problem then things may get worse as you go along.

Moonbreaker · Mar 14, 2017

you are right, dont have thermalpaste at me right now, but gonna buy some tomorrow. will let you know if it fixed it. and sorry for the language, the downside of not being native speaker, you dont know how bad some words are, will try to edit the post

Moonbreaker · Mar 14, 2017

Ralston18 :

and just out of curiosity, like i wrote, the temperature never exceeded 70°C, because the computer shut down before it could so it might be hot for idle but i had over 90°C with my old cooler and it still worked and as far as im concerned neither the cpu nor the cooler have any method of checking if thermalpaste is applied (except the indirect meassure via the temperature) so a preventive shut down seems a little unlikly for me, thats why i didnt bother to get new thermalpaste asap

Ralston18 · Mar 14, 2017

The last time I had a thermal paste problem shutdown was almost immediate. And heat was quite noticeable around the CPU.

For the most part it seemed that any of the software and sensors involved with "display" or other "presentation" of the temperature did not even get a chance to function.

Every heat cycle, especially to extremes, could well be a death knell for your computer....

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