Dell XPS 18 (1810, Early 2013) - Manual (Page 16)

Turning On Your Computer
CAUTION: Use your computer in an ambient temperature between 0 °C
and 35 °C (32 °F and 95
°F).
1 Press and release the Power and Sleep/Wake button .
NOTE: After the button is pressed, there is a slight delay before your
computer turns on or off.
2 Complete all steps for the initial setup of Windows including
Personalize, Settings, Sign in.
3 Enable security on the Security & Dell Updates page.
4 Configure wireless settings (optional).
16 │ Setting Up Your Computer