Check unattended sleep

Run the following in elevated PowerShell

powercfg /A

# Check if there's S1, S2, or S3 listed

Disable Unattended sleep

Show Advanced option

Set-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\238C9FA8-0AAD-41ED-83F4-97BE242C8F20\7bc4a2f9-d8fc-4469-b07b-33eb785aaca0 -name Attributes -Value 2

Change Unattended System sleep setting

In the Control Panel navigate to this path:

Control Panel -> Hardware and Sound -> Power Options -> Change Plan Settings

Click on Change advanced power settings.

Navigate to item System unattended sleep timeout and expand it.

Change its value to your liking, e.g. 1 day is 1440 minutes.