If your system drive is encrypted with BitLocker, the BIOS update will trigger a recovery key prompt. Suspend BitLocker temporarily:
Insert a blank USB flash drive (8GB or smaller formatted to FAT32 is ideal).
Ensure your system is connected to a reliable power source. during the process. The system will reboot automatically once finished. How to update system BIOS - Windows - Lenovo Support US lenovo thinkcentre m72e bios update
Here is everything you need to know to perform the update safely.
This is the easiest method for most users, utilizing Lenovo's windows-based flash utility. Step 1: Download the Files If your system drive is encrypted with BitLocker,
If you can't boot into Windows or prefer a DOS-based flash, this method is for you.
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The BIOS update files differ depending on your M72e sub-model. To find your version, restart your computer and press to enter the BIOS Setup. Look for the BIOS Revision Level : You have an : You have a : You have a 2. Choose an Update Method
The BIOS update utility will launch automatically after extraction. Select if prompted. Step 3: Complete the Reboot
Ensure your computer is plugged into a stable power source. Never update during a storm or when power outages are likely. An Uninterruptible Power Supply (UPS) is highly recommended.