Lenovo ThinkPad E15 Gen 3 Running Slow

If your Lenovo ThinkPad E15 Gen 3 is experiencing sluggish performance, follow this step-by-step guide to identify and resolve common issues.

As the device runs, it stores temporary files and assigns system resources for various tasks.

• Restart Device: Restart your device (⊞ win + X, then press U, then R) so it can clear temporary files and reset assigned resources.

System or driver updates may be missing, affecting performance.

• Run Windows Update: Go to Settings -> Windows Update and install all available updates.
• Update Drivers: Visit Lenovo Support and enter your device model (E15 Gen 3 Laptop (ThinkPad)) to find and install the latest drivers.

A nearly full drive can significantly reduce system speed.

• Check Available Storage: Go to File Explorer (⊞ win + "file explorer") -> This PC and check the available space on the "C: drive". If it’s near full (under ~5% free), clear unnecessary files or uninstall unused programs.
  • You may want to also consider upgrading your storage if you are running low on space. Follow this guide to replace the SSD.
• Run Disk Cleanup: Search for “Disk Cleanup” in the Start Menu (⊞ win) and run it on the primary drive. Select temporary files, system cache, and Recycle Bin items to delete.

If your RAM (Random Access Memory) is nearly maxed out during use, the system may lag.

• Check RAM Usage: Open Task Manager (CTRL + SHIFT + ESC) and go to Performance -> Memory Tab. If usage is consistently over 80%, consider upgrading the RAM. Follow this guide to replace the RAM in your Lenovo ThinkPad E15 Gen 3 laptop.

Excess heat can slow device performance.

• Check Vents and Fans: Turn off the device and inspect the vents. If they are dusty, use compressed air to clean them and remove any blockages.
• Internal Cleaning: Remove the back panel of the device and gently clean the fan area. Ensure fans spin freely and are not obstructed.
• Fan Replacement: If you've cleaned the fan and laptop and are still experiencing slow-down, it may be time to replace the fan.