Double-check your laptop model (AN515-43) and current BIOS version. You can find this information in the System Information section of your laptop's documentation or by pressing Windows key + R , typing msinfo32 , and hitting Enter.
Extract the downloaded .zip file, right-click the .exe file, and select Run as Administrator .
Do not touch the keyboard, close the lid, or turn off the power while the update is in progress. The process can take several minutes, and the fans may run at high speed. Troubleshooting & Tips Product Support - Nitro AN515-43 | Acer United States
Unplug external hard drives, mice, flash drives, and printers. Close all running applications: update bios acer nitro 5 an51543
Do not skip these steps. Failing to prepare can lead to a "bricked" motherboard, which requires professional repair.
An Acer BIOS update window will appear, displaying a warning reminding you to keep the AC adapter plugged in. Click or Update to proceed.
Compare the latest available version on the site with yours. If the site has a higher number, click Step 3: Preparation & Installation Double-check your laptop model (AN515-43) and current BIOS
Right-click the executable file and select .
Once the laptop has restarted into Windows:
They often deliver wrong or corrupted BIOS files. Do not touch the keyboard, close the lid,
How to Update BIOS on Acer Nitro 5 AN515-43: A Comprehensive Guide
If the bios is corrupted, the laptop may not turn on. You may need to perform a BIOS recovery (consulting Acer support or taking it to a professional).