The "No Bootable Device Found" error on a Lenovo ThinkCentre typically occurs because the BIOS is configured to look for an operating system on internal drives or network sources before checking external media. To resolve this, you must enter the BIOS setup, navigate to the Startup or Boot menu, and manually set the USB flash drive as the primary boot device. Additionally, ensuring that Secure Boot is disabled and Legacy Support is enabled often resolves compatibility issues with Ubuntu installation media.
Accessing the BIOS Setup
The first step in troubleshooting this issue is gaining access to the system firmware settings. Lenovo ThinkCentre machines use specific function keys to interrupt the normal boot sequence. If you miss the window, the system will proceed to load whatever is stored on the hard drive, resulting in the error message if no valid OS is present.
- Restart or power on your Lenovo ThinkCentre computer.
- Immediately begin tapping the
F1key repeatedly. This is the standard entry point for most ThinkCentre models to access the BIOS/UEFI setup utility. - Alternatively, some newer models may require you to press
F12for the One-Time Boot Menu. If you see a menu appear, select "BIOS Setup" from the list.
Once inside the BIOS interface, you will see several tabs across the top or left side of the screen. The layout varies slightly depending on whether your system uses UEFI or Legacy BIOS mode, but the core settings remain similar.
Configuring Boot Order and Devices
After entering the BIOS, the most common cause of the "No Bootable Device" error is an incorrect boot priority list. The computer might be trying to boot from the network (PXE) or a secondary internal drive instead of your USB stick.
- Navigate to the Startup or Boot tab using the arrow keys.
- Locate the option labeled Boot Priority Order, Boot Order, or Primary Boot Sequence.
- Select this option and press Enter. You will see a list of available devices.
- Identify your USB flash drive. It may be listed under names like
USB HDD,Removable Drive, or the specific brand name of the USB stick. - Use the
+/-keys or the instructions shown on the screen to move the USB drive to the very top of the list (Position 1).
If you do not see your USB drive in the list, it may not be detected by the motherboard. Ensure the drive is plugged into a working USB port, preferably a USB 2.0 port on the back of the desktop, which often has better BIOS compatibility than front-panel ports.
Adjusting Secure Boot and Legacy Support
Ubuntu installation media, particularly older versions or those created with certain tools, may not be compatible with strict UEFI Secure Boot policies. Lenovo systems often have Secure Boot enabled by default, which can prevent unsigned bootloaders from executing.
- Go to the Security tab within the BIOS.
- Find the Secure Boot option and change its status to Disabled.
- Navigate to the Startup or Boot tab again.
- Look for Legacy Support or CSM (Compatibility Support Module). If your USB drive was created using a tool that expects Legacy BIOS mode, you may need to enable this option.
- If you are unsure, try enabling Legacy Support first. If that fails, disable it and ensure your USB creation method supports pure UEFI booting.
Changing these settings can sometimes lock other options. If prompted for a password, check if one was set previously. If you cannot remember it, you may need to reset the CMOS battery on the motherboard, though this is rarely necessary for simple configuration changes.
Saving Changes and Exiting
Once you have adjusted the boot order and security settings, you must save the configuration for the changes to take effect. Lenovo BIOS interfaces usually provide a clear visual cue for saving.
- Press the
F10key, which is the standard shortcut for "Save and Exit." - A confirmation dialog will appear asking if you want to save the changes. Select Yes and press Enter.
- The system will automatically restart. During the reboot, watch for the Lenovo logo and then the Ubuntu installer screen.
If the system still reports "No Bootable Device," remove the USB drive and re-insert it firmly. Sometimes the initial detection fails due to timing issues during the POST (Power-On Self-Test) phase.
Related Resources
If you successfully boot into the Ubuntu installer but encounter issues later, such as the system failing to live boot properly, refer to our guide on Troubleshooting Not Live Boot of Ubuntu-Based System: A Tech Support Guide. Additionally, if you are setting up a virtual environment instead of physical hardware, you might face different connectivity hurdles, which are detailed in Ubuntu 22.04 VM on KVM/virt-manager Not Connecting to Internet.
Frequently Asked Questions
Why doesn't my USB drive appear in the BIOS boot list?
This usually happens if the USB drive is formatted incorrectly or plugged into a port that the BIOS does not initialize early enough. Try using a USB 2.0 port on the rear I/O panel and ensure the drive is formatted as FAT32 or exFAT. If it still does not appear, the drive may be incompatible with the system's USB controller.
Can I keep Secure Boot enabled while installing Ubuntu?
Modern versions of Ubuntu 22.04 and newer support Secure Boot, so you can technically leave it enabled. However, if you are experiencing boot failures or driver issues after installation, disabling Secure Boot is the most reliable troubleshooting step. You can always re-enable it later once the system is fully configured.
What should I do if the system boots from the wrong USB drive?
If you have multiple USB devices connected, the BIOS might prioritize the wrong one. Disconnect all unnecessary USB peripherals, leaving only the installation media. This forces the BIOS to scan only the active drive, eliminating confusion in the boot order list.
How do I reset BIOS settings to default if I make a mistake?
Most Lenovo BIOS interfaces include an option called "Load Setup Defaults" or "Restore Defaults" in the Exit tab or via the F9 key. Selecting this will revert all settings, including boot order and security options, to their factory configurations. Remember to save and exit afterward to apply the reset.
Is there a difference between UEFI and Legacy boot modes?
Yes, UEFI is the modern standard that offers faster boot times and better security, while Legacy BIOS is older and more compatible with older operating systems. Ubuntu works well with both, but if your USB drive was created using a tool that only supports Legacy mode, you must enable Legacy Support in the BIOS to boot it.