Press and hold the <strong>Shift</strong> key while you choose <strong>Power</strong> ▸ <strong>Restart</strong>.
11
If the <strong>Choose an option</strong> screen does noor the <strong>Use a device</strong> option don't appear, refer to the [[instructions on starting Tails using the Boot Menu key|doc/first_steps/start/pc#boot-menu-key]].
If the <strong>Choose an option</strong> screen or the <strong>Use a device</strong> option don't appear, refer to the [[instructions on starting Tails using the Boot Menu key|doc/first_steps/start/pc#boot-menu-key]].
If your Windows has no <b>Boot Menu</b> option available, make sure that your Tails USB stick is plugged in and choose your USB stick directly in the list of devices.
17
Such an attack is possible in theory but very unlikely in practice. We don't know of any virus capable of infecting Tails.<span class="standalone">See our [[warning on plugging Tails in untrusted systems|doc/about/warnings/computer#software]].</span>.
Such an attack is possible in theory but very unlikely in practice. We don't know of any virus capable of infecting Tails.<span class="standalone">See our [[warning on plugging Tails in untrusted systems|doc/about/warnings/computer#software]].</span>
22
[[!img install/inc/screenshots/grub.png link="noclass="screenshot" alt="Black screen ('GNU GRUB') with Tails logo and 23 options: 'Tails' and 'Tails (Troubleshooting Mode)' and 'Tails (External Hard Disk)'."]]
[[!img install/inc/screenshots/grub.png class="screenshot" alt="Black screen ('GNU GRUB') with Tails logo and 3 options: 'Tails' and 'Tails (Troubleshooting Mode)' and 'Tails (External Hard Disk)'."]]
The <b>Troubleshooting Mode</b> entry disables some features of the Linux kernel and might work better on some computers. You can try this option if you think you are experiencing hardware compatibility errors while starting Tails.
The <b>External Hard Disk</b> entry makes it possible to [[start from an external hard disk|doc/advanced_topics/external_hard_disk]] and some [[problematic USB sticks|support/known_issues#problematic-usb-stick]].