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- How risky is it to run a laptop without fan? 15-bs156nz

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02-08-2025 11:19 AM
Not a problem, just a question.
How risky is it to run a laptop without fan?
Am I at risk of a laptop catching fire and burning down the apartment?
HP Laptop Support c05493257.pdf
My understanding in the support manual is, that the fan does not depend on thermal paste.
Then HP PC Hardware Diagnostics Windows seems not to look into temperature despite the fan having a temperature sensor.
That makes me thinking, does the laptop depend on the fan?
Or is it safe to safe energy?
02-08-2025 11:34 AM
If you do not mind having the laptop shut itself down when it reaches the temperature written in the BIOS ROM code that triggers the fan to come on and cool down the processor
@matjung wrote:Not a problem, just a question.
How risky is it to run a laptop without fan? It can be done for short periods of time, but not long term. There is no published metric for the risk.
Am I at risk of a laptop catching fire and burning down the apartment? That is not likely, but of course, it is possible.
HP Laptop Support c05493257.pdf
My understanding in the support manual is, that the fan does not depend on thermal paste. Thermal paste improves the heat transfer coefficient that exists between the processor cap and the heatsink. that rests on top of the processor.
Then HP PC Hardware Diagnostics Windows seems not to look into temperature despite the fan having a temperature sensor.
That makes me thinking, does the laptop depend on the fan?
Or is it safe to safe energy?
You should probably take a course or just read up on how a laptop works.
You are mistaking a fan for the laptop's CPU cooler
The CPU cooler of a desktop PC has the identical function of one in a laptop PC.
Take a read of this.
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02-10-2025 07:21 AM - edited 02-10-2025 09:54 AM
Compare it to someone who is testing an engine they pulled out of a car at a junkyard.
You can run the motor for a short time without a radiator for a short time to see if it runs. If the motor is run for a long time it will burn up.
The only people I am aware of who, on purpose, do what you have asked about are electronics enthusiasts, technicians and service engineers who troubleshooting problematic systemboards.
As with everything, there are exceptions to the rule.
There are laptops with processors that have been designed to run without cooling. Unfortunately, they are low powered in terms of electrical power consumption and in computational power.
I am a volunteer forum member. If my suggestion helped you solve your issue, help others by marking that post as the accepted solution. Say thanks by clicking on the Yes button next to the "was this reply helpful?"