Installation failed or first boot will not start
Locate the failure stage before changing disks, firmware, or desktop settings.
Based on public documentation; not hardware-tested. Match the instructions to your version and hardware.
Identify the last successful step
Section titled “Identify the last successful step”Write down the ISO version, computer model, and exact message. A photo of the last visible screen is often more useful than “it does not boot.” Use this table to choose a branch.
| Last working stage | Symptom | Start with |
|---|---|---|
| Firmware menu | USB is absent | USB writing and boot entry |
| USB selected | Signature/security warning | Firmware requirements |
| Installer running | Disk or installation error | Target disk and first error |
| Installation finished | Installer opens again | Boot-device selection |
| Disk unlock | Password cannot be entered | Keyboard and layout |
| Unlock completed | Black screen | Display and graphics evidence |
USB does not appear
Section titled “USB does not appear”Confirm you wrote the image with an image-writing tool rather than copying the ISO file onto a normal data volume. Try a direct USB port instead of a hub. Reopen the one-time boot menu and identify the device by name.
If writing failed, repeat it using the official image and check the tool’s result. Do not format an internal disk to fix a USB detection problem.
Signature or security warning
Section titled “Signature or security warning”Read Secure Boot and UEFI and compare the exact warning with the firmware settings. Do not delete firmware keys as an experiment. A machine with required security policies needs a compatible installation plan.
Installer stops with an error
Section titled “Installer stops with an error”Capture the first useful error and note whether it happened before or after disk formatting. If keeping Windows, recheck unallocated space and the encryption prerequisites in the dual-boot guide.
A network/download error is different from a partition error. Check connectivity for the former; do not redo partitioning to solve it. Stop repeating the install if you are unsure which disk is selected.
Installer reappears after completion
Section titled “Installer reappears after completion”Check whether the computer booted the USB again. After installation has completed, restart and choose the installed system’s entry. If no entry is present, record the firmware boot list before attempting repairs. A missing boot entry alone does not prove your files were erased.
Cannot enter the unlock password
Section titled “Cannot enter the unlock password”The official guide requires a wired keyboard or one with a 2.4 GHz receiver for early disk unlock; Bluetooth is not available there. Check keyboard layout and Caps Lock as well. Do not reinstall merely because the Bluetooth keyboard is unresponsive.
Black screen after unlock
Section titled “Black screen after unlock”Note whether the screen is blank before or after unlocking, whether an external screen works, and your graphics hardware. Continue with display troubleshooting. If this began after an update on a previously working system, use update recovery instead.
Include the failure stage and observations in a help request.
Sources
Section titled “Sources”Official installation flow and keyboard requirement · Official dual-boot flow