Lenovo Laptop No Bootable Device — Causes & Fixes

What Does This Error Mean?

No Bootable Device means the BIOS cannot find a drive with a bootable operating system. Most cases are caused by a wrong boot mode (UEFI vs Legacy), a corrupted boot record, or a failed drive.

Affected Models

Lenovo ThinkPad T Series
Lenovo ThinkPad X Series
Lenovo IdeaPad
Lenovo Yoga
Lenovo Legion

Common Causes

Hard drive failure or disconnection
BIOS Boot Mode set incorrectly (UEFI vs Legacy)
Corrupted Master Boot Record or EFI partition
Wrong boot order in BIOS — USB or network listed first when no media is present
Drive not detected in BIOS due to a loose M.2 connector

How to Fix It

Check the drive in BIOS.

Tap F1 at boot to enter BIOS. Look for the drive in the system information or boot section. If absent, the drive has failed or is disconnected.
Verify Boot Mode and boot order.

In BIOS, set Boot Mode to UEFI for modern Windows installations. Make sure the Windows Boot Manager is the first boot entry, not USB HDD or network.
Reset BIOS to defaults.

Press F9 in BIOS to load defaults, then save and exit. This often resolves boot order or boot mode mismatches that cause No Bootable Device.
Repair the Windows boot record.

Boot from a Windows 10/11 installation USB. Select Repair > Troubleshoot > Command Prompt, then run: bootrec /fixmbr, bootrec /fixboot, bootrec /rebuildbcd
Reseat or replace the drive.

Power off and remove the bottom panel. Reseat the M.2 SSD or SATA cable connector. If the drive is still missing in BIOS, replace it and reinstall Windows.

When to Call a Professional

If the drive is detected in BIOS but Windows still will not boot, a technician can rebuild the boot record or perform a fresh OS installation while preserving data.