Overclock.net › Forums › Mobile Computing Forum › Laptops and Netbooks › Heat Sensor Faulty
New Posts  All Forums:Forum Nav:

Heat Sensor Faulty

post #1 of 2
Thread Starter 
My laptop have been facing heat issue for the past couple of months. It already lasted me 3 years plus. Recently my laptop instant power down due to CPU heat reaching 105 degree Celsius. I tear the laptop apart since there is no more warranty, I notice it is using two PWM fans. I manually cut off the wire which control the fan speed for both fan so that both fan will run at its maximum speed. This produce a very loud and annoying noise. The main question is, when the fan is function at PWM mode and give that the CPU already reaches 100 degree Celsius, the fans should be running at maximum speed(same speed when I cut off the signal wire) but it is running at a lower speed(Based on the sound produce by the fans).

EDIT: I have also apply AS5 for both the GPU and CPU.
Edited by larrytan - 3/24/14 at 6:58am
post #2 of 2
The BIOS controls fan speed. That means it can potentially cap the fan RPM and cause the CPU to overheat if the fan curve is setup improperly by the manufacturer (optimizing for quiet fan noise at the expense of cooling performance).

At any rate, here is my advice:
1. clean heat sink using compressed air. dust acts as an insulator causing electronics to overheat faster.
2. reapply thermal paste. be sure to thoroughly clean off the old thermal paste with a lint free cloth and 99% isopropyl alcohol. apply at most a rice grain-sized amount of thermal paste. AS5 will also take time to 'cure'.
3. run you laptop in an air-conditioned area (preferably <26 C). this might be a challenge in Singapore.
4. undervolt your CPU
5. get a laptop cooler
    
CPUMotherboardGraphicsRAM
Intel Core i5 3570K @4.4 GHz ASRock Z77 Extreme4-m ASUS GTX 670 DirectCUII TOP Patriot VIPER III 2x8 GB DDR3 1600 
Hard DriveHard DriveOptical DriveCooling
Crucial m500 240 GB Samsung 850 EVO 500 GB ASUS DVD-burner Cooler Master Hyper 212 EVO 
OSMonitorKeyboardPower
Windows 7 Ultimate 64-bit Dell Ultrasharp U2412m Rosewill RK-9000 Cherry MX Blue SeaSonic M12II 620 Bronze 
CaseMouseAudioAudio
Rosewill R101-P-BK Logitech G100s HRT Music Streamer II -> Audinst AMP-HP -> Westone 4 
Audio
Etymotic Research ER-4P 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Intel Core i5 3570K @4.4 GHz ASRock Z77 Extreme4-m ASUS GTX 670 DirectCUII TOP Patriot VIPER III 2x8 GB DDR3 1600 
Hard DriveHard DriveOptical DriveCooling
Crucial m500 240 GB Samsung 850 EVO 500 GB ASUS DVD-burner Cooler Master Hyper 212 EVO 
OSMonitorKeyboardPower
Windows 7 Ultimate 64-bit Dell Ultrasharp U2412m Rosewill RK-9000 Cherry MX Blue SeaSonic M12II 620 Bronze 
CaseMouseAudioAudio
Rosewill R101-P-BK Logitech G100s HRT Music Streamer II -> Audinst AMP-HP -> Westone 4 
Audio
Etymotic Research ER-4P 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Laptops and Netbooks
Overclock.net › Forums › Mobile Computing Forum › Laptops and Netbooks › Heat Sensor Faulty