If your device is missing, and you've signed in to it with your Microsoft account, you might be able to find it.
To find or fix your device:
Sign in to account.microsoft.com/devices.
Find the device you want to find, then select Show details.
Either select Find my device.
To check for any security issues, go to Windows Defender settings, select Show details, and check your security status.
For more info on finding a device, go to Find and lock a lost Windows device.