In this video I will show you the easiest way of cleaning the fans without disconnecting any wires or components from Y540.
Me after cleaning the fans after a long time saw a drastic improvement is thermal performance as even when my CPU was at 100% usage the fans were quite and didn't rev up to its max speed making it one of the most efficient ways to improve the performance.
The model used here has :
Intel i7-9750H
Nvidia RTX 2060
16 GB DDR4 3200 MHz
1 TB SSD + 512 GB HDD
1440p 144Hz
2 x 2 802.11 ac + Bluetooth 5.0

Lenovo legion Y540 is Desktop-caliber gaming on the go packed with incredible performance typically only available from desktops, 9th Gen Intel® Core™ laptop processors deliver desktop-caliber gaming that you can take anywhere. With up to 4.5GHz Turbo, 6 cores, and 12 threads, Legion laptops powered by these processors have enough power to handle demanding AAA games.

New PCs with Windows 10 and the latest Intel® Core™ processors are designed to support the latest PC gaming experiences, from playing the newest titles in 4K to sharing HDR screenshots—all with the stunning media-rich graphics.* Get the winning advantage of speed, power, performance, and responsiveness. Plus, with a Legion laptop, you can game on the go with a thinner, lighter system with amazing battery life.

NVIDIA® GeForce RTX™ delivers the ultimate laptop gaming experience. These sleek, powerful gaming rigs are powered by the new NVIDIA® Turing™ GPU architecture and the revolutionary RTX platform. RTX graphics bring together real-time ray tracing, artificial intelligence, and programmable shading.

The bulky gaming laptops of old are gone, and now is the time to embrace a machine that is worthy of you—stylish on the outside, savage on the inside. At 24mm thin and 2.3kg light, the Lenovo Legion Y540 Laptop was redesigned to deliver the ideal balance between epic gaming performance and practical portability.

Expert craftsmanship extends beyond design. The Y540 represents the culmination of thousands of engineering hours to deliver a laptop that is both powerful and thin. To support up to 3200 MHz DDR4 memory, PCIe SSD storage, and more, our engineers combined their expertise in battery, I/O placement, thermals, and motherboard design to pack the best hardware into one powerful gaming laptop.

With its thin bezels, the Y540 packs more than 2 million pixels into a near-edgeless 15-inch FHD display. Combined with up to 144 Hz refresh rate, 300 nits of brightness, and an IPS Antiglare screen, this laptop brings your favorite games to life, for breathtakingly immersive gameplay on the go.

Intense firefights require the most responsive of controls, and the Y540 keyboard delivers best-in-class gaming controls to give you the edge over any opponent. Full-sized and top of the line, this keyboard delivers 100% anti-ghosting, laser-engraved WASD highlights, less than 1 ms response time, white backlighting, and more for ultimate control of your system. Further, the Y540 features Windows Precision drivers with gesture control, for effortless input whether at work or play.

Heat—the nemesis of gaming performance—is no longer a concern, thanks to Legion Coldfront. Coldfront brings the latest features that a dual-channel thermal system can provide, including individual CPU and GPU cooling for cooler system temperatures, four thermal vents for improved airflow, dedicated heat syncs for cooler keyboard temperatures, and 70 individual fan blades per channel to reduce system noise.

You need to see more from your battle station. The Legion Triple Display Support System utilizes the HDMI 2.0, MiniDisplay, and Type-C ports, allowing the Y540 to connect up to three displays simultaneously for maximum immersion and control.

The Y540 features a convenient array of ports and connectors; plug in an external device or accessory or simply charge or secure your laptop with the following rear ports, seen above:
1. USB-C
2. Mini DisplayPort
3. USB 3.1 Gen 1**
4. HDMI
5. Ethernet
6. AC adapter
7. Kensington® lock slot
The Y540 also features the following side ports and connectors, seen above:
8. USB 3.1 Gen 1**
9. USB 3.1 Gen 1**
10. Headphone/mic combo

TECH SPECS AVAILABLE :
Processor :
9th Generation Intel® Core™ i7-9750H
9th Generation Intel® Core™ i5-9300H
Graphics :
NVIDIA® GeForce RTX™ 2060
NVIDIA® GeForce® GTX 1660 Ti
NVIDIA® GeForce® GTX 1650
NVIDIA® GeForce® GTX 1050 3G
Memory :
8 GB DDR4 2666 MHz
16 GB DDR4 2666 MHz
32 GB DDR4 2666 MHz
16 GB DDR4 3200 MHz
Storage : Up to 512 GB PCIe SSD or up to 2 TB HDD – Intel® Optane™-ready
Display : 39.62cms (15.6) FHD (1920 x 1080), IPS, up to 144 Hz, 72% color gamut, and 300 nits
Connectivity :
2 x 2 802.11 ac + Bluetooth® 5.0
1 x 1 802.11 ac + Bluetooth® 4.2
IMPORTANT NOTE :

I am not held responsible in any form for any damages that happens while attempting this.

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