i hope that someone can help me with this issue that's torturing me. My laptop HP ProBook 645 G2 from a week suddenly goes in overheat apparentely with no reasonable cause. The cpu goes in over frequency and the fan is constantly in action. here my inxi -F System: Host: okcomputer Kernel: 6.2.7-arch1-1 arch: x86_64 bits: 64 Desktop: KDE Plasma v: 5.27.3 Distro: Arch Linux Machine: Type: Laptop System: HP product: HP ProBook 645 G2 v: N/A serial: Mobo: HP model: 80FE v: KBC Version 04.74 serial: UEFI: HP v: N77 Ver. 01.55 date: 07/28/2022 Battery: ID-1: BAT0 charge: 21.2 Wh (58.4%) condition: 36.3/48.0 Wh (75.6%) CPU: Info: dual core model: AMD PRO A6-8500B R5 6 Compute Cores 2C+4G bits: 64 type: MT MCP cache: L2: 1024 KiB Speed (MHz): avg: 1197 min/max: 1200/1600 cores: 1: 1197 2: 1197 Graphics: Device-1: AMD Wani [Radeon R5/R6/R7 Graphics] driver: amdgpu v: kernel Display: x11 server: X.Org v: 21.1.7 with: Xwayland v: 22.1.8 driver: X: loaded: amdgpu unloaded: modesetting,vesa dri: radeonsi gpu: amdgpu resolution: 1366x768~60Hz API: OpenGL v: 4.6 Mesa 22.3.6 renderer: AMD Radeon R5 Graphics (carrizo LLVM 15.0.7 DRM 3.49 6.2.7-arch1-1) Audio: Device-1: AMD Kabini HDMI/DP Audio driver: snd_hda_intel Device-2: AMD Family 15h Audio driver: snd_hda_intel Sound API: ALSA v: k6.2.7-arch1-1 running: yes Sound Server-1: PulseAudio v: 16.1 running: yes Sound Server-2: PipeWire v: 0.3.67 running: yes Network: Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet driver: r8169 IF: enp1s0 state: down mac: a0:8c:fd:a3:0b:4b Device-2: Broadcom BCM43228 802.11a/b/g/n driver: wl IF: wlp2s0 state: up mac: 74:df:bf:a5:68:19 IF-ID-1: docker0 state: down mac: 02:42:fb:af:42:4c IF-ID-2: proton0 state: unknown speed: 10000 Mbps duplex: full mac: N/A Bluetooth: Device-1: Broadcom BCM20702A0 type: USB driver: btusb Report: rfkill ID: hci0 state: up address: see --recommends Drives: Local Storage: total: 223.57 GiB used: 86.5 GiB (38.7%) ID-1: /dev/sda vendor: Crucial model: CT240BX500SSD1 size: 223.57 GiB Partition: ID-1: / size: 204.94 GiB used: 86.35 GiB (42.1%) fs: ext4 dev: /dev/sda3 ID-2: /boot size: 317.3 MiB used: 129.3 MiB (40.8%) fs: vfat dev: /dev/sda1 Swap: ID-1: swap-1 type: partition size: 13.97 GiB used: 17.5 MiB (0.1%) dev: /dev/sda2 Sensors: System Temperatures: cpu: 66.4 C mobo: N/A gpu: amdgpu temp: 66.0 C Fan Speeds (RPM): N/A Info: Processes: 209 Uptime: 2h 2m Memory: 11.11 GiB used: 3.59 GiB (32.3%) Shell: Zsh inxi: 3.3.2

the fan is clean. I also supposed that was a Bios question.

Hello Gino,

Laptops can be trouble. There is so much crammed in so small a space, that it is hard to keep things cool.

Here are some tips for you:

-Shutdown completely when not in use. Even "sleep" mode generates heat.
-Use you laptop only on a hard surface. This allows ventilation through and around the bottom of the laptop.
-Never store your laptop in a confined space, such as the case, when it is powered on.

And some tips about using LinuxQuestions.org:

-You will get more responses if you format your post with some "white space" to make it readable.
-Use "preview in "go advanced" to see what your post will look like--before posting.
-You can also edit your posts after posting.

I'm wondering about the "noise". Can you describe it?

-Joe

1 members found this post helpful.

Joe tnx for suggestions.

The noise is like something like a Helicopter loud After splash of S.O. and the laptop goes in overheat After few minutes of job

Consider getting a cooling pad?

look in bios for info or settings.

may want to lookup advanced bios settings menu. yeah life would be great if everyone gave all bios settings by default. they dont.

Repaste between cpu & hsf with good product? If you know the fan is clean , you were able to disassemble & get inside case already. If you didn't get inside case you most likely don't know that the fan is clean.

Perhaps a Graphics issue, maybe missing firmware.

Been there.

Find your air inlets/outflows and get them clear. For me, that meant sticking some book under each end of the laptop to get the underneath clear. Also, everything inside collects dust and insulates your undersized heatsink from cold air. Disassemble & clean with a paintbrush & vacuum cleaner. That was the killer in my case and I couldn't get to it.

EDIT: +1 on the white space. Post #1 was unintelligible

Given it's 7 years old now, and a low end machine even when new, I'd start with a repaste of the CPU to see if that helps any. Then start looking at software fixes after ensuring the thermal paste is actually doing it's job instead of becoming so dried out it actually prevents thermal transfer to the heatsink.

To me, that noise would be the clatter of a hard drive failing. That's a guess, of course, based on your description. Does your laptop boot, or does it not get beyond splash page?

Hard drives do fail. And certainly this could prevent your computer from booting. The overheating could be secondary to the hard drive trouble--if that's what it is.

-Joe

If your HP ProBook 645 G2 laptop is constantly overheating with a noisy fan and CPU, there are several potential causes and solutions you can try:

Dust and debris: Over time, dust and debris can accumulate in the laptop's cooling system, blocking airflow and causing the fan to work harder, resulting in overheating. Try cleaning the laptop's cooling system, including the fan and heat sinks, using compressed air or a laptop cooling pad.

High CPU usage: If your laptop's CPU is constantly running at high usage due to resource-intensive tasks or processes, it can generate more heat and cause overheating. Check the Task Manager or any other system monitoring tool to identify processes that are using excessive CPU resources and close them if possible.

Background processes: Some background processes or applications may consume CPU resources even when you are not actively using your laptop, causing it to heat up. Close unnecessary applications and processes to reduce CPU usage and lower the temperature.

BIOS update: Check for BIOS updates for your HP ProBook 645 G2 laptop on HP's website. BIOS updates sometimes include fixes for thermal management and fan control issues that can help resolve overheating problems.

Cooling pad or external fan: Consider using a cooling pad or an external laptop cooling fan to help dissipate heat more effectively and keep your laptop's temperature down.

Thermal paste replacement: The thermal paste that connects the CPU to the heat sink may degrade over time, reducing its effectiveness in transferring heat away from the CPU. Consider applying new thermal paste to improve heat transfer and lower temperatures.

Hardware issues: If the above steps do not resolve the issue, it's possible that your laptop's cooling system or CPU may have a hardware issue. In such cases, it's best to seek professional help from an authorized service center or a qualified technician to diagnose and fix the problem.

It's important to address overheating issues promptly to prevent potential damage to your laptop's internal components. Continuous overheating can lead to reduced performance, system instability, and even permanent damage to the CPU or other hardware components.

If you need it...

There is a service manual for this laptop online.
It seems useful if you need to get to the fan.
That is if you want to try on your own.

Just some tests you can try. lmsensors must be ran for the sensors command to work.

I just answer yes to everything.

In addition to the fan, you probably also have a heat sink. It needs to be clean and not clogged with dust. Cleaning may require disassembly, and disassembly means that that thermal grease needs to be reapplied between the heat sink and the CPU. I had this happen once with a ProBook. I washed the heatsink off under a faucet, dried it, and reapplied thermal grease. It did wonders.

Also, before disassembling anything, it would be good to first verify that the CPU cores are not under a constant heavy load. If they are, that would indicate that the problem is not the cooling system. A program like "htop" can do this.