Lenovo Yoga C740-14IML Overheating

Heat in the laptop is released by the heatsink. Heat sink blockage or failure could lead to poor CPU cooling.

• If the heatsink has become blocked, shut your device off, and let the machine cool down.
• identify the device vents, see if there is any visible blockage from dust, hair, or other materials. If there are visible obstructions you will definitely need to complete these following steps.
• Take off the back panel of your device to access the heatsink HYPERLINK
• Blow canned air on the heatsink to remove any dust/debris.
• Replace the back panel of your computer.
• If this does not fix your heatsink you will need to replace the heatsink HYPERLINK

If the heat pads have defected or heat paste has dried out and cracked, this degradation leads to poor heat dissipation, causing the CPU to overheat.

• Check to see if the heat paste has dried out and become cracked, resulting in poor heat dispersion.
• If the old thermal paste is cracked, dried out, or worn it will need to be removed and reapplied. HYPERLINK
• If the heat pads are defective they will need to be replaced HYPERLINK

Unwanted programs in the background cause extra strain on your laptop, making your computer produce lots of heat.

• If you do not have an antivirus application, downloading one is highly recommended to run antivirus scans with and save you from future malware.
• Run a full antivirus scan to check for viruses doing things like mining bitcoin.
• Open task manager to check how busy your CPU is. You can open task manager using the shortcut Ctrl+Shift+Esc. If your CPU is working harder than it should, there is most likely a program you are not aware of running in the background.

If dust, hair, debris or anything else has gotten in the vents, it can reduce the flow of air, making your computer overheat.

• If you are using your computer on a something soft like a blanket or pillow, place a book or hard flat surface beneath it to ensure the vents have room to breathe. It is possible that your computer has sucked up dust from the soft surface beneath it, hair or other material from the surface it was sitting on, so you may need to complete the following steps.
• Identify the vents in the bottom of your laptop, and run a vacuum cleaner along the laptop vents to clear any loose debris.
• If previous measures did not work and there is still matter blocking the laptop's vents, you may need to disassemble the laptop and clean it out by hand using a soft brush or cotton swabs.

If the device's fans have failed the computer is unable to pull air in to ventilate itself.

• If it is a software issue you will need to update your system including BIOS and drivers.
• If updating the system does not fix the issue a fan replacement is required. HYPERLINK

If the computer is overheating you may possibly have a defective battery. a defective battery may cause overheating issues because it needs more power, but there are blown circuits or other issues causing it to overwork itself.

• Check for factors such as battery swelling, leaking, and discoloration.
• Check your battery report for battery capacity and cycle count.. Check your these by opening your device settings. Then go to power. Under the "at a glance" section of this page it will have the full charge capacity percent relative to when it was new. The cycle count will be below the full charge capacity percent. If it has low battery capacity or a high cycle count, it is defective.
• If the battery is defective it will need to be replaced. HYPERLINK

Many issues can be the issue of a faulty motherboard, such as faulty components, incorrect sensor readers, overclocking, airflow issues, and possibly dust buildup as well. All of these issues can lead to overheating within the laptop.

• Clean the PC by disconnecting all cables and external hardware. Then, clean the casing and remove components such as the RAM, fan, video card, hard drive, CPU, and anything else. Use a blower to blow through the case and also a soft brush to clean any dirt.
• Reapply thermal paste to the GPU and CPU components. HYPERLINK
• Check the fan and case to ensure that they are all working properly.
• Use software to monitor the temperatures to make sure they are in a safe range.
• Consider upgrading cooling systems.