Check the detailed guides below.
Tip 1.
Update Windows 10
you could click Start -> controls -> Update & Security.

Click Windows Update in the left pane.
And click Check for updates button.
Windows will automatically check and install available updates.

Tip 2. check that Windows 10 Screensaver Is Enabled
Tip 3.
Reset Power Management Option
Tip 4.
Tip 5.

Run Power Troubleshooter
Tip 6.
Run SFC Scan
Best Windows 10 Screensavers
Screensavers are designed to reduce the energy consumption of computers.
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