Troubleshoot Prismara OS

Cause: The USB drive wasn’t written correctly, the PC is starting from its internal disk first, or the PC is set to start in legacy BIOS mode.

Resolution:

1. Restart the PC and open the boot menu again. The key is often F12, F11, F10 or Esc; check your PC manufacturer’s guide if none of these work.
2. If the USB drive is listed twice, choose the entry that starts with UEFI.
3. Try a different USB port, ideally one directly on the PC rather than through a hub.
4. Write the USB drive again, choosing disk image mode and GPT for UEFI if the tool asks.
5. Check the download’s checksum against the one on the download page. If it doesn’t match, download Prismara OS again.
6. If your PC is managed by your organisation, the boot menu may be locked. Ask your IT team.

Cause: The PC’s firmware doesn’t trust the software it’s trying to start. This can happen on some PCs with older firmware or with custom Secure Boot settings.

Resolution:

1. Don’t turn off Secure Boot as a first step. It protects your PC from start-up threats.
2. Open your PC’s firmware settings and check that Secure Boot is set to its default or Standard mode, then restart.
3. Update your PC’s firmware from the manufacturer’s support website, then try again.
4. If you use the Enterprise edition, your organisation controls which software the computer trusts at start-up. Contact your IT team; they need to prepare the PC.
5. If the message continues on a Personal or Business installation, contact support with your PC’s make and model.

Cause: The PC’s wireless adapter needs a driver or firmware that isn’t available during setup, or wireless is turned off.

Resolution:

1. Check that wireless isn’t turned off with a key, switch or airplane mode.
2. Connect the PC to the internet with a network cable, or share your phone’s connection over USB.
3. Open Settings > Updates and install all available updates, then restart.
4. Open Settings > Additional drivers and install any driver offered for your wireless adapter.
5. If Wi-Fi still doesn’t appear, contact support with your PC’s make and model.

Cause: The start-up menu wasn’t updated to include Windows, the PC is starting Prismara OS directly, or Windows Fast Startup has locked the Windows disk.

Resolution:

1. Restart the PC and open its boot menu. If Windows Boot Manager is listed, select it to start Windows.
2. In Prismara OS, open Settings > Start-up and turn on Show start-up menu, then restart.
3. In Windows, turn off Fast Startup in Control Panel > Power Options > Choose what the power buttons do, then shut down fully.
4. If BitLocker is turned on in Windows, have your recovery key ready; Windows may ask for it after the start-up order changes.
5. Don’t delete any partitions to fix this. If Windows still doesn’t appear, contact support.

Cause: The display driver isn’t set up correctly for your graphics card, or the display is using a fallback resolution.

Resolution:

1. Open Settings > Displays and choose the resolution marked Recommended.
2. Check the display cable is firmly connected. Try a different cable or port if you can.
3. Open Settings > Updates and install all available updates, then restart.
4. Open Settings > Additional drivers and install any driver offered for your graphics card, then restart.
5. If everything looks too small or too large, change Scale under Displays rather than lowering the resolution.