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I opened the laptop case and now its 10c hotter

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Last day i re-pasted and cleaned my laptop, all was fine. the idle temp was about 45C and under stress it never went above 83C. And then i realised that my kb backlight was not working so i opened the laptop case again. I didnt even touch anything, Just looked at the motherboard and make sure the keyboard pin was connected. And then i closed the case.

Now its much hotter. 10C hotter during idle and 95+C under load. Whats wrong?
 
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Actually you are the best person to answer this. Open up the case and look at it.

Any suggestions here would be purely guesses and you have to open the case to fix it anyhow.

It's not like it'll fix itself or you can change some setting in the registry.
 
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Actually you are the best person to answer this. Open up the case and look at it.

Any suggestions here would be purely guesses and you have to open the case to fix it anyhow.

It's not like it'll fix itself or you can change some setting in the registry.
I did. I didnt see anything wrong. All the same
 
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System Name daily driver Mac mini 2018
Processor Intel 3.2 GHz Core i7 (I7-8700B Coffee Lake - 6 cores, 12 threads)
Motherboard Apple proprietary (with Apple T2 Security Chip)
Cooling Apple proprietary
Memory 16GB 2666 MHz DDR4 PC4-21300 SDRAM
Video Card(s) integrated Intel UHD Graphics 630 + Sapphire Pulse Radeon RX 580 8GB (via Sonnet eGPU Thunderbolt 3)
Storage Apple proprietary 1TB SSD + various external HDDs
Display(s) LG 27UL850W (4K@60Hz IPS)
Case Apple proprietary
Audio Device(s) Apple proprietary
Power Supply Apple proprietary
Mouse Apple Magic Trackpad 2
Keyboard Keychron K1 tenkeyless (Gateron Reds)
Software macOS Monterey 12.6 (including latest patches)
Benchmark Scores (I have a number of desktop Windows PC builds but I use the Mac the most.)
Pity there are no photos.

That might assist others here in making a credible suggestion for improvement.

¯\_(ツ)_/¯

But clearly something you did was wrong. Poor thermal paste application, displaced thermal pad(s), debris, incorrect reassembly, dislodged fan cable, inadequate screw tightening, all of the above, some of the above, none of the above, who knows?

Maybe take it to a PC repair shop? 10 °C is a massive increase.
 
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If you're using an old grade paste like MX4, it would degrade very fast as it's not supposed to work in high temps above 85C like MX5, Noctua NT-H2 and other, which have double the max working temperature (200C).
 
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That's the problem with working on laptops. Some brands are very fragile, like HP. Every time you open it up there is a risk something it not work right afterwards. Just try it again, re paste it and look at everything
 
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Simple, repaste with a better TIM, and do a proper application nothing magical has happened
 
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That's the problem with working on laptops. Some brands are very fragile, like HP. Every time you open it up there is a risk something it not work right afterwards. Just try it again, re paste it and look at everything
Yes, i did, i re-opened it, re-pasted it and the problem is gone.

Every time i open the laptop some screw out of nowhere falls down or a small plastic part which doesnt seem to belong to anywhere falls down.

Im fed up with laptops...
 

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Yes, i did, i re-opened it, re-pasted it and the problem is gone.

Every time i open the laptop some screw out of nowhere falls down or a small plastic part which doesnt seem to belong to anywhere falls down.

Im fed up with laptops...
... that sounds like you broke a few things
 
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Yes, i did, i re-opened it, re-pasted it and the problem is gone.

Every time i open the laptop some screw out of nowhere falls down or a small plastic part which doesnt seem to belong to anywhere falls down.

Im fed up with laptops...

Welcome to the Desktop then? ;)

I can vouch for it. Everywhere around me I see laptops with very short lifespans, while every desktop I've owned still runs to this day, or has a very easy to fix problem (that often isn't even worth putting effort into given the age).
 

Aquinus

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Yes, i did, i re-opened it, re-pasted it and the problem is gone.

Every time i open the laptop some screw out of nowhere falls down or a small plastic part which doesnt seem to belong to anywhere falls down.

Im fed up with laptops...
That sounds like you used too much paste the first time around. You need to be very careful when working on laptops. With how fragile the bolts for CPU coolers are, they should freaking come with a torque spec. The reality is that when you're working on a laptop you need to be ultra careful. I can't tell you how nervous I get opening my MacBook Pro just to get the dust out.
 
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Welcome to the Desktop then? ;)

I can vouch for it. Everywhere around me I see laptops with very short lifespans, while every desktop I've owned still runs to this day, or has a very easy to fix problem (that often isn't even worth putting effort into given the age).
Agreed.

That sounds like you used too much paste the first time around. You need to be very careful when working on laptops. With how fragile the bolts for CPU coolers are, they should freaking come with a torque spec. The reality is that when you're working on a laptop you need to be ultra careful. I can't tell you how nervous I get opening my MacBook Pro just to get the dust out.
I dont think so because it worked very fine until i opened the case to check the backlight
 

Aquinus

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I dont think so because it worked very fine until i opened the case to check the backlight
Some thermal pastes require a variable number of heating and cooling cycles to cure. Some are faster than others, or maybe the bracket is just shoddy quality. There are a lot of unknowns when working with laptops. That's why working on my MBP scares the hell out of me.
 
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