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Windows 7: Is this CPU degradation in my laptop?

12 Jul 2014   #1
Vistangel

Windows 7 Home Premium x64
 
 
Is this CPU degradation in my laptop?

Hi I've been having this laptop for 4 years now but I think it has serious CPU problems. It has i7 720qm in it and it has always running hot but nowadays it's completely useless...
Here's what happened:
I bought it in 2010.
In 2011 - idle: 60C, render 95C, games 80-90C.
In 2012 - with cooling pad, idle: 55-65C, render 95C, games 90-95C (!)
In 2013 - stronger cooling pad, idle: 60-65C, render 100C, games 100C (!!!)
1s half of 2014 - HDD corrupted of heat (but I saved it when service couldn't tee-hee)
At this time, I turned on Power Saving and underclocked it to minimum 0.9ghz.
Now ON 0.9ghz it's 72C idle, on stock 1.6ghz it's 82-85C!!! (idle again!)
I thought it's thermal paste problem but I touch the keyboard and it almost melting so hot... and it puts out a lot of heat. Like 2 months ago I wanted to do a memory test (I took out the cooling pad for some reason) and at 40%, it turned off (I think reached tjunction) and the motherboard heat and voltage monitor disappeared. I'm extremely curious now what voltages it's working on but I can't see it .
So I don't know why this is happening, what causes the overheating? I fear that my second HDD will be ruined because some months ago with cooling pad it was on 40C but now it's on 52C!


My System SpecsSystem Spec
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12 Jul 2014   #2
pbcopter

Windows 7 Ultimate x64 SP1, Windows 8.1 Pro x64, Windows 10 Pro x64
 
 

Have you tried any compressed air to blow out the dust from the laptop?

Dust is the main cause of a computer gradually getting hotter over time.
My System SpecsSystem Spec
12 Jul 2014   #3
linnemeyerhere

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate 64
 
 

Cleaning of any running computer must be performed on a regular basis and depending on run time and environment I would say once every 6 months minimum with the next service being a deep clean to get to fans and cleaning them physically as well as direct cleaning cpu cooler. I on the other hand clean my desktop rig every other month and my lappy every 3 months !
My System SpecsSystem Spec
.

12 Jul 2014   #4
badger906

Windows 7 Ultimate x64, & Mac OS X 10.9.2
 
 

you may have to replace the termal compound on the cpus heat sink. over time it can break down or become less effective, especially if cheap TIM is used, or the processor runs constantly hot.
My System SpecsSystem Spec
16 Jul 2014   #5
Vistangel

Windows 7 Home Premium x64
 
 

Quote   Quote: Originally Posted by pbcopter View Post
Have you tried any compressed air to blow out the dust from the laptop?

Dust is the main cause of a computer gradually getting hotter over time.
I sent it to the store and they checked the fan and everything was dust-free despite the fact that I didn't take it to clean the fans for years.
My System SpecsSystem Spec
16 Jul 2014   #6
Vistangel

Windows 7 Home Premium x64
 
 

Quote   Quote: Originally Posted by badger906 View Post
you may have to replace the termal compound on the cpus heat sink. over time it can break down or become less effective, especially if cheap TIM is used, or the processor runs constantly hot.
Yeah maybe I should but how much does it cost if I send it to service to change the TIM? (I tried disassembly but I would just ruin everything so I'd rather send it to someone who knows what's up). And how long does it take for them to reapply the TIM?
My System SpecsSystem Spec
16 Jul 2014   #7
linnemeyerhere

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate 64
 
 

Depends on the design of the cpu, gpu and there cooler relative to the removable panels. I would hope that a talented tech could do this in under 1 hour and the dab of TIM is minor compared to the labor.
My System SpecsSystem Spec
26 Jul 2014   #8
Vistangel

Windows 7 Home Premium x64
 
 

Quote   Quote: Originally Posted by linnemeyerhere View Post
Depends on the design of the cpu, gpu and there cooler relative to the removable panels. I would hope that a talented tech could do this in under 1 hour and the dab of TIM is minor compared to the labor.
Okay thanks for the answers. I'll send it and see what's happening. I bet they can't keep this CPU under 100C under full load but at least the idle temp should go down to like 40C.
My System SpecsSystem Spec
26 Jul 2014   #9
badger906

Windows 7 Ultimate x64, & Mac OS X 10.9.2
 
 

instead of paying someone else to do it, tackle it yourself.
all you need to be able to do is use a screw driver!! thernal compound is like $4

ill never pay someone to do something unless ive tried and failed myself first!!
My System SpecsSystem Spec
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 Is this CPU degradation in my laptop?




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