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Acer Aspire 5742Z overheating, please take a look.

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  • Aspire
  • Acer
  • CPUs
  • Laptops
Last response: in Laptop Tech Support
June 30, 2014 2:07:37 PM

I have an Acer Aspire 5742Z, and when nothing is runing it is using around 70% CPU , which clearly overheats my pc after a while, I download a program to see the temps inside.
When not runninng anything the core Temp is 56 degrees, when watching a video on youtube this increases to 65-70 Degrees celcius.




I dissasembled it properly and cleaned the fans but this didnt change anything.
I tried a BIOS update , but nothing changed.
Any suggestions are welcome.

More about : acer aspire 5742z overheating

a b D Laptop
a b à CPUs
June 30, 2014 3:19:25 PM

id go to taskmgr and go to processes tab to see what is using up the cpu so much
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July 22, 2014 3:02:52 PM

more than likely it's a virus some can use lots of CPU to try to limit what you can do also if you have norton anti virus delete it norton uses tons of CPU and isn't that great of a anti-virus
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Related resources
July 22, 2014 3:20:54 PM

Christian Nettleton said:
more than likely it's a virus some can use lots of CPU to try to limit what you can do also if you have norton anti virus delete it norton uses tons of CPU and isn't that great of a anti-virus


I'm using Avast anti virus, it doesnt detect any virus.

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July 22, 2014 6:02:09 PM

agten said:
Christian Nettleton said:
more than likely it's a virus some can use lots of CPU to try to limit what you can do also if you have norton anti virus delete it norton uses tons of CPU and isn't that great of a anti-virus


I'm using Avast anti virus, it doesn't detect any virus.



well something is using tons of CPU and normally that isn't a good sign. Are there any unwanted or large applications set to start on boot?
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July 23, 2014 7:41:16 AM

Christian Nettleton said:
agten said:
Christian Nettleton said:
more than likely it's a virus some can use lots of CPU to try to limit what you can do also if you have norton anti virus delete it norton uses tons of CPU and isn't that great of a anti-virus


I'm using Avast anti virus, it doesn't detect any virus.



well something is using tons of CPU and normally that isn't a good sign. Are there any unwanted or large applications set to start on boot?


Nope nothing special. could it be usefull to apply cooling paste on the processor?
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July 23, 2014 12:07:38 PM

agten said:
Christian Nettleton said:
agten said:
Christian Nettleton said:
more than likely it's a virus some can use lots of CPU to try to limit what you can do also if you have norton anti virus delete it norton uses tons of CPU and isn't that great of a anti-virus


I'm using Avast anti virus, it doesn't detect any virus.



well something is using tons of CPU and normally that isn't a good sign. Are there any unwanted or large applications set to start on boot?


Nope nothing special. could it be usefull to apply cooling paste on the processor?


i am in no way, shape, or form a computer expert but if its overheating cooling gel couldn't hurt
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July 23, 2014 1:56:45 PM

appreciate ur help Christian but I would like to have an answer from someone with expertise in the field.
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a c 205 D Laptop
a b à CPUs
July 23, 2014 4:56:12 PM

When was the last time you cleaned dust out of the fan by spraying a can of compressed air into the exhaust vents? :) 

Also, FWIW, my CPU is currently idling at 2-3% usage. You must have something MAJOR running.
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a c 539 D Laptop
a b à CPUs
July 23, 2014 5:16:24 PM

agten said:
I have an Acer Aspire 5742Z, and when nothing is runing it is using around 70% CPU


Hi, go in the Task Manager, click Processes, and in the bottom left, click on Show processes from all users. After, click CPU on the fourth row, you will see the program who uses the most of the CPU.
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July 24, 2014 7:41:04 AM

jarotech said:
agten said:
I have an Acer Aspire 5742Z, and when nothing is runing it is using around 70% CPU


Hi, go in the Task Manager, click Processes, and in the bottom left, click on Show processes from all users. After, click CPU on the fourth row, you will see the program who uses the most of the CPU.


I Edited main post with a processes picture.
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a c 539 D Laptop
a b à CPUs
July 24, 2014 12:40:26 PM

But from your picture of processes, you only use 2% from your CPU at that time.
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July 24, 2014 1:36:39 PM

jarotech said:
But from your picture of processes, you only use 2% from your CPU at that time.


And still it gets super hot..
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a c 539 D Laptop
a b à CPUs
July 24, 2014 1:49:37 PM

Have you changed the thermal paste on the CPU when you have cleaned the fan? If not, maybe a new paste will lower the temperature.
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September 17, 2014 12:00:22 PM

It is a problem with the 5742's I'm afraid.

There are reports all over the web on various forums about their overheating issues.

I have a 5742 myself and it gets bloody hot under intensive programs.

I have installed "Core Temp" and idle is ~55'c, but it regularly goes to ~70C under load. Intensive programs cause it to run into the 90's.

Nothing better than a new fan/better fan/better cooling paste/better laptop will solve this.
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